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What is Linux bash && Command Separator

In Shell scripting Often You will see multiple Linux bash commands run by spearing ‘&&’ sign. bash && use for executes sequence of commands one by one, but if one command failed reset of the commands will not execute. In other words, what bash && do is it runs multiple Linux commands one after another as long as there is no failure, if one command failed reset of the Linux commands will never execute.

If cmd1 success, then execute the cmd2, if cmd2 success then execute cmd3. Likewise, if cmd1 fails cmd2 and 3 will not be executed.

Bash && example 1

Bash && example 2

As per the above example, Second command failed because there is no file name nohosts inside the /etc directory. And as result third command never executes.

You can use bash && when you want to run multiple commands where you want all of them to be success to complete the task or otherwise it should stop executing.