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string-upper - convert strings to uppercase

Synopsis

string upper [-q | --quiet] [STRING ...]

Description

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

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Licensed under the GNU General Public License, version 2.
https://fishshell.com/docs/3.5/cmds/string-upper.html