Last month, I explored exit codes and how decent error correction in your shell scripts always should include testing the value of $? after each meaningful command ...

Shell builtins are commands that are loaded into memory when a shell — such as bash, sh, or zsh — is invoked. The reason for this is that keeping these commands in memory helps ensure that these ...

If you've been keeping track of my column, you'll know that we're building a Blackjack game as a shell script. Why? Because most shell scripts are far too boring to study without nodding off, so ...

Here's how to make the jump from simple lines of code to something that's a lot more useful. After reading countless blogs online, purging through hundreds of pages of books, you feel comfortable ...