Learn how to disable ufw Ubuntu Firewall on Ubuntu 20.04.
Google Docs enables you to apply a custom style you created as the default style to the selected element. We can use this feature to set default font in google docs, as well as the default font size.
UFW comes preinstalled with Ubuntu, but inactive by default, How can I know? Well, we just need to check the status of the firewall.
This Linux tutorial explain why you get the error message chown operation not permitted when changing the owner of a file with chown command. You will also learn the solution to the problem and how to change the file owner in Linux without any problem.
In the previous article we installed LiteIDE on Ubuntu, Today I am going to explain how to install Jetbrains Gogland GO IDE on Ubuntu. Like LiteIDE, Gogland also created specifically for Go Programming language.
There are a couple of Go-specific IDEs, The most popular one is LiteIDE, which is a free and open-source, cross-platform integrated development environment.
In this article I will explain how to install LiteIDE on Ubuntu. The LiteIDE is a development environment created specifically for Go Programming language.
When using python on CentOS 7, we need a package manager that can install various other python packages and third party libraries. The pip is the default package manager for Python, which you can use to install third party python libraries on CentOS 7.
Java Development KIT contains the capabilities needed to develop java applications as well as run java programs on your computer. JDK 9 is the latest version of the Oracle Java Development Kit.
Learn How to Solve "The configuration file now needs a secret passphrase (blowfish_secret)" error in phpMyAdmin.
You could get the following error message in phpMyAdmin page, if you manually download and installed phpMyAdmin.
In this tutorial we will learn how to install and configure MongoDB, which is the most popular NoSql Database Server.
The most obvious reason for the "mysqladmin: connect to server at 'localhost' failed" message is that MySQL Server is not running. If you are trying to run the mysqladmin command on a docker container..
In this tutorial we are going to learn how to install ssh server CentOS 7 Linux.
SSH Protocol allows users to connect to a remote computer through their computers. It is the Most secure way to access a remote computer through the internet. If you want to connect to your CentOS 7 Server from a remote computer, then you should install ssh server on CentOS 7.
In this tutorial we are going to learn how extract 7zip file in CentOS 7.
In Order to extract 7zip files, we need to install p7zip package on CentOS 7. The p7zip package provides the 7za command which we are going to use to unzip 7zip files.
In this tutorial we are going to learn how to unrar .rar files in CentOS 7 using unar utility. To extract rar file in CentOS 7, We need to install package called unar (Not unrar), Then we can extract rar files using the unar utility.
In this tutorial we are going to learn how to check for package updates in CentOS Linux using the yum check-update command. The yum check-update command use to search for the software updates in Redhat Based Linux Distributions. To check updates on CentOS 7, execute yum check-update on the CentOS Terminal.
In this centos tutorial we are going to learn how to install rpm Packages in CentOS 7 Linux using yum install command.
Traditionally the rpm command used to install rpm Packages in CentOS Linux. But the better way is to use yum command to install rpm files because when you install rpm package using yum command, it will automatically install all the dependency packages needs by the original package. With rpm command, we have to install all dependency packages manually one by one.
In this tutorial we are going to learn how to install iftop on CentOS 7. Iftop is a network bandwidth monitoring tools that can be used to monitor the usage of the network interfaces on your CentOS Server or Desktop.
In this CentOS 7 tutorial we are going to learn how to delete files in CentOS 7. In CentOS 7 rm command use to delete files and folders. The rm command also use in all Unix like operating systems to delete files.
Percona Server is a drop-in replacement for the MySQL database which use an enhanced version of InnoDB Database engine called xtradb. According to the Percona Website Percona xtradb is designed to provide superior performance, scalability and instrumentation.
In this tutorial we will learn how to Install Percona xtradb Server on CentOS 7. We will do the following steps to install Percona xtradb Server on CentOS 7.
In this tutorial we are going to learn how to mount samba share on CentOS 7. The samba is typically used to share files with Windows computers, But using the SMB/CIFS protocol we can also mount samba shares on Linux.
To mount samba share on CentOS 7, we need to install cifs-utils package on CentOS 7. The cifs-utils contains the tools and Utilities need to mount shares using SMB/CIFS protocol.
In this CentOS 7 tutorial we are going to learn how to Install varnish cache on CentOS 7 and How to Configure varnish cache for CentOS 7 Apache Web Server. Varnish cache is a great way to reduce your server load and improve the response time of your website.
In a Client Server Network, Linux is preferred as the server operating system and Microsoft Windows use in most of the client computers. So you need a way to share files between your Linux server and the Microsoft Windows Operating System. The most common way to share files between Linux and windows is to configure Linux as File server using Samba server. In this tutorial we are going to learn how to install and configure the samba server on CentOS 7. After completing this tutorial you should be able to configure your CentOS 7 server as a File server using samba and share files on your CentOS Samba Server with Microsoft Windows Operating System.
In Linux runlevels are several different modes that a Linux system can run. In CentOS 7 runlevels called as systemd targets. In this tutorial we are going to learn how change runlevels in CentOS 7. Runlevels in CentOS 7 identified little bit differently compared to previous version CentOS 6, even though the basic concept is still the same. In CentOS 7 runlevels are called as systemd targets.
In this CentOS 7 tutorial we are going to learn how to disable selinux in CentOS 7. Selinux is there to make your CentOS 7 server more secure, But sometimes you may need to turn off selinux anyway. This method works on any previous version of CentOS Linux, including CentOS 6.5 and CentOS 5. Also, you can use this method on any redhat based Linux distribution, including Red Hat Enterprise Linux (RHEL 7), Fedora, Oracle Linux and Scientific Linux.
In this CentOS 7 tutorial we are going to learn how to install and configure DHCP Server on CentOS 7 Linux. At the end of this tutorial you should be able to configure your CentOS 7 server as a DHCP server and issue dynamic IP Address to the client Computers on your network.
In CentOS 7 members of the wheel group can run linux commands with sudo privileges. In This CentOS 7 tutorial we are going to learn how to add user to wheel group in CentOS 7. To add a user to the wheel group in CentOS 7 we can use either usermod or gpasswd command.
The Nginx Web Server is a good Alternative for the Apache Web Server. While Apache is still the most commonly used web server, Nginx is a Lightweight Web Server design for the high trafficking websites.
In This CentOS 7 Tutorial We are going to Learn How to Install Nginx on CentOS 7 with php-fpm enable.
The Nginx Web Server still does not come with the official CentOS 7 repository, But We have several methods available to install nginx on CentOS 7.
One method to install nginx using the repository provides by the Nginx itself, another method is to use fedora epel repository. And also We can install nginx from the source.
In This CentOS 7 tutorial we are going to learn how to Install PHP 7 on CentOS 7 Linux Operating System.
PHP 7 still does not come with the official CentOS 7 Software Repository, So we have to either use a Third party repository for PHP 7 or we can build PHP 7 from the source. In This tutorial we are going to Learn Both Methods.
First, we will install PHP 7 using a third party repository, then we will see how to build PHP 7 from the source. And we are using Apache HTTPD Server as our Web Server for CentOS 7 PHP.
Apache2 is the most popular Web Server Implementation for Ubuntu Server 14.04. In This Ubuntu Tutorial we are going to learn how to install Apache on Ubuntu Server 14.04. In Addition to installing Apache on Ubuntu Linux, we will also learn how to create and configure Apache Virtual Host and host a simple static website on Ubuntu Server.
In this Tutorial you are going to learn How to install and FTP server on Ubuntu Server 14.04. FTP (File transfer protocol) is the most common method to access files on a Linux system from a remote computer. As a Linux system administrator you must know how to configure your Linux server as a FTP server, especially if you are running a web server. The vsftpd is the best FTP Server software for Ubuntu Linux. Vsftpd is not installed by default on Ubuntu Server, but we can easily install vsftpd on Ubuntu Linux using apt-get install command.
In this Ubuntu tutorial I am going show you how to install Dropbox on Ubuntu Linux 14.04. Dropbox app use to sync files on your computer to Dropbox cloud. It is a good way to backup files on your computer. There are multiple ways we can install Dropbox in Ubuntu Linux 14.04. Easiest way is to install using Ubuntu Software Center. We can also download and install the latest version from the source(www.dropbox.com). We will look at the all methods.
Opera web browser is most used in mobile operating systems as well as in Microsoft windows operating systems. But Opera also works well in most Linux distributions. If you are looking for a web browser for Ubuntu Linux other than Firefox and google chrome, then you should try opera on Ubuntu Linux. In This tutorial I am going to show you how to install opera web browser on Ubuntu Linux desktop 14.04 with two easy steps. So follow along.
In previous article we installed sublime text editor on Ubuntu Linux. Today We are Going to install atom editor in Ubuntu Linux 14.04. Atom IDE is very similar to sublime 3 text, But atom is a free open source editor while sublime is not completely free.First, we are going to download atom for Ubuntu, then we can install atom using Ubuntu software center.
In this tutorial we are going to learn how to install Skype in Ubuntu 14.04 Desktop. First, we are going to download Skype for Ubuntu then install using Ubuntu software center. So follow along.
In This tutorial i am going to show you how to install sublime 3 text editor on Ubuntu Desktop 14.04 using Ubuntu software center, without using the command line interface.
Very Secure FTP Daemon (VSFTP) is the most popular FTP server implementation use in CentOS 7 Linux. Vsftpd has been very popular because it is a very fast, lightweight FTP server and very easy to configure.In This CentOS 7 tutorial we are going to learn how to install and configure VSFTPD on CentOS 7 Linux.
In this tutorial we are going to learn how to install python IDLE IDE on CentOS 7 Linux.
IDLE editor for CentOS 7 provides by the python-tools package. So to install idle on CentOS 7, we need to install python-tools using yum install command.
In this tutorial we are going to learn how to install phpMyAdmin on CentOS 7. phpMyAdmin is the most popular GUI use to manage MySQL Database. If you are running a MySQL server on CentOS 7 Linux, Then definitely you need to install phpMyAdmin in CentOS Server.
phpMyAdmin is a web based application written in using PHP language, So before we install phpMyAdmin, we need to install PHP on CentOS 7 as well as Apache Web Server. So let's see how it is done.
In this tutorial we are going to learn how to install ssh server on Ubuntu 14.04.
In Ubuntu Linux ssh server provides by the openssh-server package. We can install Ubuntu openssh-server package using apt-get install command.
apt-get install openssh-server
In this tutorial we are going to learn how to install VirtualBox guest additions on Ubuntu 14.04 Virtual machine. Following method works for both Ubuntu server and desktop distributions.
To install VirtualBox guest additions on Ubuntu 14.04, First power on the Virtual machine. Then , from the virtual machines menu under the device sub menu, click on Insert Guest Additions CD Image.
In this tutorial we are going to learn how to install VMware Workstation on CentOS 7 Linux.It is very easy to install VMware Workstation on CentOS 7 with following three steps.
In this article we are going to see how to install adobe flash player on CentOS 7 Linux. No matter whether you are using Windows or Linux, If you are using a Desktop operating system you need to install adobe flash player plugin for your web browsers. It is same for the CentOS 7 Linux, without installing the flash player plugin it will be difficult to use CentOS 7 as a your Desktop operating system.
You could get following error message "configure: error: no acceptable C compiler found in $PATH" when you try to compile and install a software from a source. I got above error message once, when I was going to install python 3 on CentOS 7.
Reason for the error is your Linux machine does not have the gcc compiler installed. Install gcc compiler to fix the problem.
In this tutorial we are going to learn how to get the kernel version of your CentOS 7 Linux computers.So how do we find what version of Linux kernel our CentOS 7 server use?
Just like in any other Linux distribution uname -r command can be used to get CentOS 7 kernel version.
In This Tutorial We are going discuss How to Install python3 on CentOS 7 Linux.
For CentOS 7 We have two methods to Install Python 3. One Method is to use the epel software repository. Another method is to download and install python3 from the source.
CentOS 7 still uses python version 2 and version 3 is not included in CentOS 7 Base software Repository. But the good news is epel repository now provides python3 for CentOS 7. So if we install epel release, then we can install python3 using yum command.
In This Article we discuss How to Install Sublime Text 3 on CentOS 7 Desktop.
Sublime still do not provide distinct software repository or RPM package for CentOS 7. But Linux 64 bit version of sublime text editor works ok with CentOS 7.
You should always upgrade the centos kernel whenever the new kernel updates are available, to keep your server up to date. kernel update in CentOS 7 is easy and fairly straightforward.
So In This tutorial We will discuss how to update centos kernel in Linux CentOS 7.
In CentOS 7 we can use the useradd command in the terminal to add new user to the system. If you are using CentOS 7 Graphical Desktop you can also use user manager software which is a graphical user interface.
Easiest way to create user in CentOS 7 is to use the useradd command from the CentOS command line.
I think you already know we can’t use the_permalink() function to assign WordPress permalink to a PHP Variable, because it is echo the permalink instead of returning. So how we can get the post URL to a PHP Variable ? get_permalink function use to retrieve the permalink of current post or given post id (Also works for WordPress Pages).
Make sure to install kernel-headers and gcc Compiler Before you install VirtualBox on CentOS 7 or Fedora 23 workstation. Otherwise, you will get multiple “Recompiling VirtualBox kernel modules failed” error messages.
Webmin is a free, open source web based Linux administration control panel that can be used to control your Linux system from the web browser. Especially if you are not very familiar with the Linux command line, you can use Webmin as a graphical user interface for Linux server administration.
The latest version of Webmin support CentOS 7. So in this tutorial we will show you how to install and configure Webmin on CentOs 7.
When you login to a Linux CentOS server, the first thing you might want to do is to determine what version of centos you are using. We have more that one command to find centos version information. So let's see how to use those methods to check CentOS version in Linux.
It is Important to have virtualization software on CentOS 7 for Testing and development purposes , especially if you are a system administrator who trying to test other operating systems or if you are students who wants get your hands on multiple operating systems. We can use Oracle VM VirtualBox to run other operating systems top of the CentOS 7 desktop.
For those of you new to virtualization, It is simply allowing us to create virtual computers inside our current operating system. For example, using a virtualization software like oracle VM VirtualBox, we can run Microsoft Windows 7 inside CentOS7 computer.
The purpose of this tutorial is to learn how to install oracle VM VirtualBox on CentOS 7 desktop. So do the following steps to install VirtualBox on CentOS 7 using yum command.
By default, CentOS 7 comes with the media player called “videos” which is a good media player but not an advance one. And default videos” player does not have the right codecs to play some of the video formats that are commonly used. For example, we may not able play flash videos (.flv files). So If we use CentOS 7 Desktop, then we definitely need an advanced media player which can support most of the video and audio formats. And VLC is Probably the best multimedia player available for any Linux distribution. So in this article we will show you how to install VLC player in CentOS 7 with two easy steps.
VirtualBox Guest Additions contain add-on Softwares and device drivers that will increase the performance of your CentOS 7 virtual machine. Without guest additions it will be difficult interacting with the guest operating system, especially if when you use CentOS 7 desktop environment. You can do the following steps to Install VirtualBox CentOS Guest Additions on CentOS 7 to enhance virtual machine performance and features.
So what is the easiest way to Open Windows Task Manager in Windows 7? Learn keyboard shortcut to launch Task Manager in Windows 7 instantly.
Lshw is a Linux Command line tool that can use to list hardware information on a Linux Server. If you want to view hardware details of your For CentOS 7 server then use lshw, because Output is more accurate and easy to understand.
So is it possible to login to root account on CentOS 7 without root password? Yes, it is possible if you have a regular user account with sudo superuser privileges. In order to get the sudo superuser privileges in CentOS 7, You should be a member of the wheel group. To check that login to your user account and type groups command in the terminal.
In Debian Linux sudo command allows regular users to do administrative tasks as the root user. This way you don't have to give away the root password, instead others can run administrative commands using their own password. But by default Debian 8 do do not support sudo superuser access, it is not being configured or installed. Anyway, it is very easy to install sudo on debian 8 using apt-get command. Open the terminal window and enter the following command as root.
Before we talk about mysqldump --add-drop-table option, we need to understand what happens when you dump a MySQL Database. When we backup MySQL database using mysqldump command, it actually creating a script file containing multiple SQL Statements. These statements include MySQL queries which will use to restore the database and tables.
AWS Identity and Access Management (IAM) is a free security service provided by Amazon Web Services to control user access to the AWS resources and the Services. Access management is done by using users and groups and assigning them specific permissions.
You may already know that CentOS 7 use Firewalld as the front end interface to manage netfilter firewall and not Iptables. So the purpose of this tutorial is to learn how to install and configure Iptables on CentOS 7 Linux, since many of the Linux system administrators still prefer Iptables over Firewalld. So do the following steps.
MySQL is a Free open source database management system popular among Webmasters because of the its stability and rich features. And not to mention MySQL Database works extremely well with PHP Programming Language which make it an important part of the LAMP Stack. The Purpose of this tutorial is to Learn How to Install and Configure MySQL Server on Ubuntu Linux. In Addition to the Installation we will also look at some useful mysql commands that will be helpful for the system administrators. For this demonstration we will be using Ubuntu Server 14.04.
You don’t have to Create root user account because it is automatically created during the installation, The only thing is there is no password by default. So what you have to do is set a password to root user using sudo command.
More often we use netstat command to list open ports on a Linux system. But not only that, we can use netstat command to display routing table by combining with -nr options. The output of the netstat -nr in Linux very identical to route -n command, which can also use to display the routing table.
Usually we add ip routes in Linux using either route command or "ip route" command. While both commands work the same way, neither command can use to add permanent routes to the system. They will get removed if you restart the network or if the server rebooted. We have two methods to add permanent static routes in CentOS 7. One method is to use nmcli command, another method is to add entries manually by directly adding the configuration file into the /etc/sysconfig/network-scripts/ directory.
Most of the windows Help documentation files use the Compiled HTML Help file (.chm) format. For example, PHP manual. But when you open a .chm file you will most likely to see the error message Navigation to the webpage was canceled, instead of the help content. and if you go to file properties you will see the following warning message.
First of all what is a Persistent Route? The answer is very simple. persistent route is a permanent static route that will not be deleted when computer restart. Use following format to add Persistent route in Microsoft Windows using CMD(You need to run CMD as administrator)
It is important to Know how to backup iptables firewall rules on your Linux server. Iptables firewall is a very sensitive thing, with one mistake you could mess up your entire network system, especially if you have configured your Linux server as a router. So you should always backup current configuration before you make any changes.
MTR (My Traceroute) is a real time network diagnostic tool used to trace the path IP packets take to its destination. My Traceroute is a combination of two other networking tools, ping and traceroute. Even though MTR originally was a unix like software, windows version of the software called WinMTR available for Microsoft Windows operating systems.You can download the latest verion of WinMTR from this website for both 64bit and 32 bit systems.
CentOS 7 Firewalld Allow us to block all incoming and outgoing network traffic using just one single command. This is Also called as panic mode. When the panic mode is on, all incoming and outgoing packets will be dropped and active connections will expire.
I'am Trying to write a simple firewall rule using the iptables negation (not equal). Simply What I want is to allow any traffic which is not UDP. But I get the error "Using intrapositioned negation" when I add the rule. Following is the complete error message.
Netbeans IDE is one of the most popular development environment among java developers. Not only for Java, but Netbeans also can be used for other programming languages including PHP, HTML, C and C++. If You are looking for a Perfect advanced text editor for CentOS 7, Then I say you should try Netbeans IDE. So now let's see how to install Netbeans IDE 8.0 on CentOS 7, Step by Step.
I am having repodata problem in my CentOS virtual Machine. I can’t update or install software using yum command. Only get the following yum pycurl error 22 message.
You Should Be Careful when you flush iptables rules, because if you do not flush iptables properly, you could end up being locked out of your server. Use following bash script to flush iptables rules, instead of applying iptables -F Command Directly to the system.
Even though Using Design view is the preferred method to customize Blogger Template, You Can add your own CSS codes to the templates to change the design. Do as Follows to add CSS to blogger template.
Cloud computing means providing computer related technologies through the internet as a service. It is like your home electrical system. You use it when you want and only pay for what you used. It is same in the cloud you only pay for the resources you consumed and you do not pay for the resources you don’t use, which called pay as you go in cloud computing. Consumer access the cloud service using a simple web browser and there is hardly need of special software to access services. Which Mean you can access the cloud from anywhere and any device with any platform.
Previously we learned about how to install Filezilla on CentOS 7. This Time We are Going to Install Filezilla FTP Client on Ubuntu Desktop 14.04. It is easier to install Filezilla for Ubuntu than CentOS Linux. For the installation we can use either command line interface or Ubuntu Software Center.
Ubuntu uses UFW (Ubuntu Firewall) as the Frontend tool to manage netfilter firewall rules by default. But if you are more familiar with iptables, no problem we can easily install and configure iptables on Ubuntu Server. So lets see how to install iptables on Ubuntu server 14.04.
If you want to download old version of Mozilla Firefox for testing purpose or any other reason Mozilla have This Website which enable you to download Mozilla Firefox old Versions.
Dropbox is a cloud file sharing service not only allow you to share files on the internet, but able to sync files on your local computer to the Dropbox cloud. When you sync your files to the cloud you can access them from anywhere with any device. You can start file sharing by creating an online account like with any other file sharing services. But to sync files between your computer and the cloud storage you need to install the Dropbox app. The good news is Dropbox app is support for CentOS 7. So Today In this lesson we will learn how to install Dropbox on CentOS 7.
Transmission is a good lightweight bittorrent Downloader which can be on CentOS 7 to Download Torrents Files. Installing transmission on CentOS 7 is easy once we add the epel repository. So Lets see how to install transmission on CentOS7 Linux.
Last time we learned How to Install Atom Editor On CentOS 7. While Atom is a Free Editor, May be it is Time for you to try Commercial Code Editor and it is going to be Ultraedit. Just Like Atom, Ultraedit Also easy to install on CentOS Desktop.
Atom Is a Free open source Cross platform Text Editor Developed GitHub. If you need advanced Text Editor For CentOS 7 Desktop then Atom Editor is the best option. And the Good News is we can easily install atom on CentOS 7 Linux.
Do You Want to Watch Live TV Online Free? In This Article I am going to show you How to Watch Live tv Online Using Google Chrome Web Browser. This is Very easy only thing we have to do is to add the TV For Google Chrome Extension to the Browser. Follow The Following Steps to Install the Television Extension to the Google Chrome. First Go to the Google Web Store. Open Google Chrome and go to following URL to access web store1
We Have Already talk about How to Configure CentOS Linux As a Web Server Using Apache HTTPD Server. Now we have come to the next step, That is to Learn How to Install PHP on CentOS 7. This Essential if you are planning to run your own web server since Most Popular Content Management Systems have been written using PHP Language. PHP Has been the most Popular Scripting Language Because it Works with several commercial and non commercial Databases Management Systems and Allows to Create Dynamic Web Pages Easily.
This Article Focus On Interview Questions You Will Be Asked When You apply For the Job Post of Linux System Administrator. Basic To Advance Questions Will be Included, So This will be helpful for Both Freshers and Experienced Administrators.
In This Tutorial We will be Learning how to change the default runlevel in Centos 6.5. And Before Make Any Changes we need to know what are the available runlevels are on CentOS 6.5. Like Any other Linux System CentOS 6.5 Have Seven Runlevels (0 to 6). Configuration File is /etc/inittab. To Change the runlevel we need to edit /etc/inittab file. So open the file with a text editor. For example vim.
Currently I am using atom text editor for Java coding. I am just beginning to learn Java so I don't want code hinting at this moment. I like to type everything manually until I get familiar with coding. So is it possible to disable code hints in Atom Editor?
Is it ok to put Google Adsense ads on a Fix Div in My website or is it illegal? As far as i know You can't put google ads inside fix div. This is what google says. So I think Answer is Clear. You will violate Adsense policy if you display ads on a fixed position on your website.
Two Commands can be used to Restart Apache HTTPD Server on CentOS 7, Those Two Commands are systemctl and apachectl. You Can use either of the Two commands In Linux CLI. apache2ctl is a front end to the Apache HyperText Transfer Protocol (HTTP) server. It is designed to help the administrator control the functioning of the Apache apache2 daemon.
Shared Hosting Means Running More than one Website on a Single Machine, With each Website has its own Domain Name. If the Server Running more than one Website then it is called as a Shared Web Server. Today All the Web Servers Support Running Multiple website on a Single Machine. This generally is Done by using the Concept Called Virtual Host.
When Changing a Password using passwd command only the root user can specify a username. Which means only the root user may change a password of a another user. If a regular Linux user wants to change their own password, just type passwd command without specifying the user name.
Hello! I need a little help. I am trying to remove a file with the rm command in terminal. But the file name start with a double dash and I get the following error when try to remove. rm: unrecognized option '--filename'
Epel repository (Extra Packages for Enterprise Linux) can install on CentOS 7 Using either yum or rpm command. It is Very easy to install using yum command.
I am trying to restart the MySQL server on Ubuntu using service mysql restart command. But I only get Following Error. stop: Unknown job: mysql start: Unknown job: mysql
Yes! Java is case sensitive programming language. For Example You Can Write a Two Variable With the Same name and one of the Variable start with Capital Letter, Java will Consider the Two Names as Different Variables.
NO!! Variable names in Java Cannot be started with a number. In Java Variables can only start with a Letter, Underscore (_) , or Dollar Sign ($). You can include numbers anywhere after the first letter. But you still cannot use symbols such as @,*,& and etc..
I just installed Atom Text Editor on My Kubuntu Desktop and Everything is fine except There is a Vertical Line appears in the Middle of the Screen as Below Image.
How to Change Default Mail Transfer Agent in CentOS ? I Recently Installed Postfix Mail server. But I think still sendmail is the default MTA. I Am using CentOS 7 Server. In CentOS, we can use alternatives Command to Select a Default programme when there're two or more programs for the same task.
passwd command uses to change user password in Linux using command line interface. If you want change your own password just type passwd in the Linux terminal.
In This Tutorial we will learn How to View Apache Server Status in Command Line CentOS 7 and CentOS 6.5 using systemctl and service Commands.
How To Install Dig On CentOS 7 ? I Tried with yum install dig, But Only Get Following Error Message. No package dig available.
With dig Command (Domain Information Groper) we can Retrieve All Types of DNS Record and Can be used to find out NameServers for Domain. To find nameservers for a domain use dig with NS Option.
This Article Will Guide you through How To Update Whois Record Information of your Domain Which you Have Registered with the DreamHost.
Simple Mail Transfer Protocol (SMTP) protocol is used to send emails From Client To Mail Server Across the Internet. SMTP is used to Send Mails. To Receive emails From the Server to email Client (MUA) on Your Computer, One of Following Two Mail Access Protocols can be used.
Do you Get the Error bash: telnet: command not found in the Linux terminal? Obviously the reason is you don't have Telnet installed on your Linux Server. So Following Will Show you How to Install Telnet on Different Linux Distributions.
Below is a Good Video Tutorial I Found on YouTube, Talks About What are Ports and Sockets in Networking. It is Short And Simple.
If you are a Windows Administrator you can use TCPView, Which is Provided Graphical User Interface to netstat Command and with more Advance Options.
Mozilla Thunderbird is a one of the best email client for Linux. And today we will see how to install this free, open source and cross-platform email application in CentOS 7.
Learn what is Command use to Clear Screen in Windows command prompt (CMD) and keyboard Shortcut to cls Command.
All Programming languages use comments, so is Java. Mainly Java has Three Type of comments. Single Line Multi Line and Javadoc.
I Have a Linux Web Server, which has CentOS 7 Installed. Now I am trying to use setenforce command to change selinux mode between permissive mode and enforcing mode. But I Only get Following Error “setenforce: SELinux is disabled”.
By Default ssh root login disabled in Ubuntu 14.04. This wasn't a case in Ubuntu 12 which had root SSH Login enabled out of the box. First time I Installed Ubuntu 14.04 and when ssh to my new server with the root user, I got the error messages Access denied. First my thought was that I am entering the Password incorrectly and I even reset the root password. But Only after looking at the sshd_conf file, I realize that This is Because the root login has been disabled by default in Ubuntu 14. And, I did the following steps to Enable Remote SSH for root user.
IN Linux Centos7 Details of the users stores in /etc/passwd file. While there is no single command in Linux to print User List on the server, What we can do is to use cat or getent command to print the content of the passwd file.
I have a Problem. Whenever I add a double dash in to my content, WordPress automatically converts it into one long dash when display in the web browser. I suppose This is Because some kind of WordPress Auto Formatting.
We use robots.txt file to give Instructions to Search Engines and web crawlers. By Adding your Web Site Sitemap in robots.txt file will make it easier for Search Engines to Index your Web Pages. This is also Something You must do when it comes to Search Engine Optimization (SEO).
In this Tutorial I will guide you through the installation of Apache HTTPD Server on Newly released Centos7 Operating System. In Addition we will also configure the CentOS firewall to allow HTTP request. Then we will do the PHP, MySQL and phpMyAdmin Installation too. At the end of this tutorial you will learn how to setup Complete CentOS LAMP Stack.
Today I will show you how to update Mozilla Firefox to latest Version on a Centos 7 Desktop. To update, Firefox we don't even need to open the browser, what we have to do is, open the Linux terminal and update the Firefox using yum the update command.
I Tried to Download a Web Page Using wget command , But I get the following error wget command not found. This Because wget command (which is use to retrieves files from the web) is not installed in your Linux Computer. To install wget On a Redhat Based system use yum command. And you can use apt-get install command in Ubuntu and Debian Linux. Let's See How to install wget.
JRE is Java Runtime Environment simply is the Java virtual machine (JVM) which provides you the Environment to run Java programs and applications.JDK - is Java Development Kit is a development package for programmers which Also include the JRE.
Learn How To Check CentOS Version in Linux Terminal Using Commands centos-release, redhat-release and os-release
CentOS Does not come with two versions as desktop and server Like Ubuntu (Ubuntu has two versions, Ubuntu Server and Ubuntu Desktop), Only Duration the installation you can decide whether you want to install the desktop or Not. And It is quite normal to install a CentOS Server with a Desktop.
This is Because your user does not have sudo privileges. In CentOS there is an administrative group named wheel. Only the Members of the wheel group can run sudo command. To fix the error all you have to do is , add non root user to the wheel group. For that we can use Linux usermod command.
TeamViewer is a Remote Control and Desktop Sharing Software. It has been the most Popular Remote Control Software among Windows user, But also Available for other Platforms Including Linux. In This Tutorial We are going to see How to Install TeamViewer on CentOS 7, One of the Most Popular Linux Distribution.
In Cloud Computing Scale Out means Increase the Number of nodes in the system and Scale up means increasing the Resources of a one node of the system (Memory, CPU).
PermitRootLogin Parameter in sshd_config File controls how root user can login to the Linux server via ssh (Secure Shell). The Value of PermitRootLogin is without-password means the root user Cannot Login to the Server via ssh with a password. Also This Has been The Default Value In Ubuntu 14. If tried to Login With Password, root will get Following Error.
Filezilla Does not come with the default CentOS Repository, So we will use fedora epel repository instead. Installation is very simple, All we have to do is first install CentOS epel Repository and then Install Filezilla with yum command.
htop is a Linux process monitoring tool, It is an alternative tool for top command, Which is the standard and default process Monitoring tool in Linux and Unix Operating System. To Install htop on CentOS 7 We Want to add CentOS epel repository, Because the htop software package does not come with Default CentOS yum repository.
wc Command with -c option used to print the byte counts (characters) of a file In Unix and Unix like operating systems Including Linux . wc command without giving any option prints Three Counts (lines, words, and characters). But with -c option, only the byte (characters) count will be printed.
Apache Graceful Restart means, reloading the Apache Configuration(httpd.conf) without restarting the Web Server. When we do the Graceful Restart it only reloading the Configuration file and do not restart the Apache Web Server. So the currently open connections will not be aborted. So you can make the changes to the httpd.conf file and reload the changes without closing existing connection.
In Linux sudo is a command use to run commands with administrative privileges. It is Like run as administrator in the Microsoft Windows Operating System. But sudo is not a command that every Linux user can run. In order to use sudo command user must be a member of the group called wheel group.
You Can add extra security to a Linux Server By Disabling Remote Access to root User, So That Only None Root Users can connect to the server via ssh. In this Article we will discuss how to disable root ssh login in Centos 7.
In simple, Garbage Collection in Java is objects that are not in use or the objects that has no reference variable. In Java when a new Object Creates it’s created in Java heap memory and it will be kept in heap memory as long as the object has a reference variable in the stack memory. But once no variables are referring to the object that object is eligible to the Java garbage collection. Then the programme called Garbage collector runs and destroy the objects that are in the garbage collection.
If You See Following Error “Apache WILL NOT start without the configured ports free!” in the Xampp Control panel, This is Because Some Other Program Already Running using Port 80. In Most Case This Skype, Since Both Apache and Skype use Default Port 80, You may not able to run Both Program at the same time using the same Port Number.
How can I Setup Google Chrome to be My Default Web Browser so when open a html page or when I click On a URL from a Email or in a Document it is always open with chrome. Currently I have both internet explorer and Mozilla Firefox Installed on My Computer.
Do you Think Your Linux Server Display Wrong Disk space usage when you type df -h command in the terminal, even after you delete lots of files and folders? This is because even If you Deleted some files, Program that use those files still keep open Files you Just Deleted, So first you need to find out what are the deleted files that are still open, to find out that we can use lsof command (List Open Files), open Linux terminal and type
If You Familiar with Linux Operating system you Should already Know that SSH (Secure Shell) is a secure network protocol which we can use to login to a Linux computer from remote location and access Linux command line interface. What we Normally do is use ssh client software like Putty or SecureCRT and login to remote computer by using IP address or Hostname. By Default SSH uses TCP port 22 to establish the connection, but since everyone Knows what is the default port number is you may want to change ssh port from the default 22 to a different number for a security reason. Not a big deal we can Do that easily by editing sshd_conf file which is located at /etc/ssh Directory. So in this Tutorial i will Show you how to change SSH port in a Linux Server. And also you can use this method in any Popular Linux distribution such as Ubuntu, Debian, Redhat and Fedora. For This Demonstration I Will Be Using Centos7.
By default Wordpress adds a base name before the category name in the permalink.But Most Webmasters prefer to remove Category Base in order to have a SEO Friendly Url. So How Can We Do it? We Can Do this By Using either Wordpress Plugin or Changing the category base Value in Permalink Setting.
How to Set Outlook 2013 as Default Mail Client, So When you Click On a email link by default it will always open with outlook 2013
Are you getting following xampp error message “Apache shutdown unexpectedly” when try to start Apache server using xampp control panel ? This Because some other programme is using port 80 which is also need by Apache web server to run
This is Quick and Easy and Easy Guide to How to Install google chrome in Centos 7 Using Yum Command. What we Going to do is First Download google Chrome rpm package and install using with yum install. Even though i haven’t checked You should able to use This Method for Other Red Hat Based Distributions, includes Red hat Enterprise Linux, Fedora Desktop, Scientific Linux and Oracle Linux.