string-lower - convert strings to lowercase

Synopsis

string lower [(-q | --quiet)] [STRING...]

Description

string lower converts each string argument to lowercase. Exit status: 0 if at least one string was converted to lowercase, else 1. This means that in conjunction with the -q flag you can readily test whether a string is already lowercase.

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Licensed under the GNU General Public License, version 2.
https://fishshell.com/docs/3.2/cmds/string-lower.html