The eval command allows you to run the contents of variables as commands and can be very useful, especially in scripts. There are probably a lot of Linux users who have never encountered the eval ...

I've talked before about how I am a lazy shell script programmer. It might be because I'm simply not a full-time professional software developer, and I don't even administer my own servers anymore—I ...

Establishing variables for certain things just makes good sense. If there is a path to a file or directory, that's a perfect candidate for a variable. That way, the code can be easily changed in the ...