ScriptingLesson 51Free preview

Bash Functions

This lesson is part of Bash · All levels

Summary

The Bash function groups commands so they can be used repeatedly with the same name. You define it with a curly braces block, then call it a regular command. The function receives the argument via $1, $2 and returns the value via return or stdout.

Key points

{...;} defines the function
Arguments given when calling, read through $1 and $2
Returns the output status in numerical form
Local limits the variable to only live in the function

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