[for command] perform a set of commands multiple times #fish #linux

for.md

local variable inside for body isn't exported to outside, remember to use set -x option.

Syntax

for <var-name> in $list_variable
	echo $<var-name>
end

Note: you could replace $list_variable with foo bar baz

Note 2: when declaring var-name, it's the name, not the variable substitution.

Common use cases

Traverse all files in a single/multiple directory

Single directory

• for file in /path/to/directory
• for file in /path/to/directory/

All directories inside a directory for dir in /path/to/directory/*/ (remember the trailing backspace, or it will print both files and dirs)

All files inside a directory for file in /path/to/directory/*

All files inside multiple directory for file in /path/to/directory/*/*