Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.

Linux Journal, representing 25+ years of publication, is the original magazine of the global Open Source community.

I’m going to go ahead and admit it: I really have too many tray icons. You know the ones. They sit on your taskbar, perhaps doing something in the background or, at least, giving you fingertip access ...

I recently switched to Mac OS X as my primary desktop operating system after spending over a decade on Linux. Although Apple’s operating system supplies practically all of the command line tools I ...

I'm passing a file to my script and then I need to get into a for loop until all the lines are read and manipulated, but what was the simple syntax for reading each line of the inputed file? (assuming ...

Shell scripting is one of those skills that are absolutely invaluable on especially UNIX and BSD-based systems like the BSDs, the two zillion Linux distributions as well as MacOS. Yet not every shell ...

A file of executable commands for Unix and Linux. Created in a text editor, when the file is run, each command is executed until the end of the file is reached. After the shell script is written, it ...