In this how-to we shall take our first steps into creating Bash scripts with three example projects. The first is the ...

Making the Script Executable. After writing your script, you need to make it executable with the chmod command: chmod +x myscript.sh . Basic Syntax. A Bash script typically starts with a shebang (#!) ...

Environment variables are very helpful to use in scripts and are sometimes necessary to be manually set when installing certain software. Start using them now to make Linux and the Linux command ...

When it starts from the rc.local file, it can't see the environment variables. Things I've tried: Creating a bash script to run in the rc.local file that exports the environment vars ...

It is easy to dismiss bash — the typical Linux shell program — as just a command prompt that allows scripting. Bash, however, is a full-blown programming language. I wouldn’t pres… ...

When writing scripts, it’s important to know how to test and validate variables. You may need to verify that required arguments are provided and that the values match what is needed.

You could set the MY_SITE variable as, say, techrepublic.com, and use the variable in a bash script. Next, you might want that variable to change, so you could reset the temporary variable to a ...

The code above sets the global variable myresult to the function result. Reasonably simple, but as we all know, using global variables, particularly in large programs, can lead to difficult to find ...