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.
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 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 7 tutorial we are going to learn how to unzip zip file in CentOS 7 using unzip command.
To unzip a zip file in CentOS 7, First we need to install unzip command. After installing the unzip command we can unzip zip folders using either command line or from the GUI if you use CentOS Desktop version.
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 tutorial we are going to learn how to Install and Configure Iptables on Fedora Linux. You can follow this tutorial to install iptables on both Fedora Workstation and Fedora Server.
The firewalld is the default firewall in the Fedora 24 which is the latest release. But if you’re more familiar with iptables, then you can easily install and configure Iptables on Fedora Linux.
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 Article, I am going to show you how to install DropBox on Fedora Workstation. Once you have the Fedora DropBox app Installed, You can sync files between your computer and the Dropbox Cloud.
I will be installing DropBox on Fedora 24, But you can use following to Install Dropbox App in Any Previous version of Fedora Linux.
In this tutorial we are going to learn how to install and configure Apache HTTPD Server on Fedora Server. I will also explain how to create Apache Virtual Host on Fedora HTTPD Server to host more than one website on the Web Server.
For This tutorial I am using Fedora Server 24, But you can do this on Fedora Workstation and also in any Previous Version of Fedora Linux.
In this tutorial we are going to learn how disable Selinux in Fedora Linux. Selinux is there to make your fedora server or workstation more secure. But Selinux some applications may not work properly with Selinux is Enabled.
In Fedora we can disable Selinux permanently or Temporarily.
In this tutorial we are going to learn how to install wine in Fedora 24 Workstation. The wine is a software application which we can use to install windows software on Fedora Linux.
For this tutorial I am using fedora workstation 24, But you can use this method to install wine on any previous fedora version, including fedora 23 and 22.
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 tutorial we are going to learn how to install google chrome in Linux Mint 18. Mozilla Firefox is the default web browser in Linux Mint, But if you want google chrome on Linux mint, then it is very easy to Install.
To install google chrome on Linux Mint we will download the latest stable version and install with the GDebi software installer.
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.
If you are using the Atom text editor as you python IDE, then you should add the script and Terminal-plus packages to the atom editor. With the script package you can run python programs from the atom text editor and Terminal-plus open the Linux/Unix shell in the atom editor.
To run python scripts in the Atom text editor, we need to Install the script package.
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 this article I am going to show you how to install Atom Text Editor on Fedora 24 Workstation.
First, we are going to download Atom .rpm package for Fedora Linux 24. Then we can install the atom text editor on Fedora 24 using dnf install command.
In the last tutorial we installed google chrome on Fedora 24 Workstation. Opera is another popular web browser you can use in Fedora Linux.
In this tutorial we are going to learn how to install opera on Fedora 24 workstation, But you can use this method to install opera on previous Fedora releases, Fedora 23 and 22.
Using TeamViewer you can access your Fedora desktop from a remote computer, Also you can connect to remote computers from your Fedora desktop through the TeamViewer Client.
In this tutorial we are going to learn how to install TeamViewer on Fedora 24 Workstation.
Mozilla Firefox is the default web browser in Fedora 24 workstation. But many users like to use google chrome over Firefox as their default web browser in Linux.
In this tutorial we are going to learn how to install google chrome on Fedora 24 Workstation.
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.
We can use either shutdown or poweroff command to shutdown Ubuntu
Server from the terminal.
The Ubuntu shutdown command requires a time parameter while poweroff command will power off the server immediately.
In This Rehat Linux Tutorial we are going to learn How to Install htop process monitoring tool on Red hat Linux 7.
So first install the epel repository for RHEL 7.
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
In this Red Hat Linux 7 tutorial we are going to learn how to configure RHEL 7 DVD as Redhat yum repository(Local repository).
Red Hat Enterprise Linux 7 is a subscription base Linux Distribution. We can install and use Red hat 7 for free, but we cannot use their software repositories to to install software without a Redhat Linux subscription.
So in order to install softwares using yum command we need to configure Our RHEL 7 DVD as a yum repository.
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 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 list users in Ubuntu Linux.
Ubuntu Linux does not have a single Linux command to get the list of users on the system. But we can get the userlist by outputting the content of the /etc/passwd file, since /etc/passwd file contains information about all users.
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.
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.
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.
On a Linux system Superuser refer to the root user, who has unlimited access to the file system with privilege to run all Linux commands.
Regular Linux user can only access files owned by the user himself. same way regular users cannot execute commands that have an effect to the hole Linux system. So most of the time you will have to become Superuser if you want to perform administrative tasks.
There are two methods we can use to become Superuser in Linux.
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.
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.
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.
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.
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.
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.
In Linux System we can read gzip files without extracting or uncompress. We can do this by using both command line and Graphical User Interface. One Method is to use linux less command in the command line interface.
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.
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.
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.
Check Server Uptime In Linux – In This Tutorial We will be Discussed How to Check Server uptime On a Linux Server Using uptime Command.
We Can use uptime Command To Check server uptime in Linux. Output will Display how long the system has been running. Open Terminal and Type
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
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.
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.
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.
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.