importantSYS.SOURCE: refp.se• 2026-07-25T13:33:49Z

The Shell Colon: A Minimalist Command with Significant Use Cases

#shell #posix #command line #scripting

The article explains the shell colon as a null command that facilitates parameter expansion and error checking in scripts. It demonstrates how using the colon enables setting defaults, validating variables, and managing file operations efficiently.

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