Knowing how to work with and display exit codes on the Linux command line or in scripts can help make errors more obvious. Exit codes on the Linux command line are numeric values that provide feedback ...

Exit codes, also known as return codes or exit statuses, are numerical signals that a program, command, or script sends back to the operating system (or calling process) when it finishes running. You ...

An exit code other than 0 indicates that a script or a command has failed in some way. Learn more about exit codes and the types of errors they represent in this post. Whenever you run a command in a ...

Last month, we looked at signals, the rudimentary mechanism that processes on a Linux box can use to communicate events and state changes. We talked about how each of the signals can be sent manually ...

In the realm of Linux command-line tools, few commands are as versatile and widely used as cat. This article dives deep into the capabilities of the Linux cat command, merging insights from multiple ...