If Bash is started with the -c option (see Invoking Bash), then $0 is set to the first argument after the string to be executed, if one is present. Otherwise, it is set to the filename used to invoke Bash, as …

May 2, 2025 · In this article, we’ll provide an in-depth guide to all bash special variables, including examples of their usage and common pitfalls to avoid. $0 – The name of the script being executed.

Bash (short for " Bourne Again SHell ") is an interactive command interpreter and scripting language developed for Unix -like operating systems. Created in 1989 by Brian Fox for the GNU Project, [7] it …

Note: $@ and $* must be quoted in order to perform as described. Otherwise, they do exactly the same thing (arguments as separate strings). See Special parameters. Note that [[ is actually a …

Bash is used to write scripts and run commands on Linux systems. It helps automate tasks, manage system operations, and boost productivity. Tip: Sign in to track your progress. A shell is a text-based …

Jul 23, 2025 · In this article we discuss Bash scripting which plays a vital role in automating tasks within the Linux environment. As a command-line interpreter, Bash offers simplicity and ease of use for …

Sep 14, 2012 · $! is the PID of the most recent background command. $0 is the name of the shell or shell script. Most of the above can be found under Special Parameters in the Bash Reference …

A complete guide for newcomers and advanced users to correct usage and deepen understanding of the bash shell language.

Bash sets PS1 and $- includes i if the shell is interactive, so a shell script or a startup file can test this state. The following paragraphs describe how bash executes its startup files. If any of the files exist …

Dec 25, 2025 · Subscribe to the newsletter for sharper Bash skills Level up your shell work - subscribe to the newsletter for practical Bash function patterns, clear argument-handling examples, and best …