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NAMEstring-upper - convert strings to uppercaseSYNOPSISstring upper [(-q | --quiet)] [STRING...] DESCRIPTIONstring 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.COPYRIGHT2021, fish-shell developers
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