ID(1) ID(1) id - print real and effective user and group IDs id []... []... Print user and group information for each specified USER, or (when USER omitted) for the current process. -a , -Z, --context -g, --group -G, --groups - -n, --name , -u,-g,-G -r, --real -, -u,-g,-G -u, --user -z, --zero delimit entries with NUL characters, not whitespace; not permitted in default format --help --version , . . : bug-coreutils@gnu.org coreutils : : Copyright (C) 2026 Free Software Foundation, Inc. 3+: 3 . : . , . ,,info '(coreutils) id invocation'" ; 3 . . , - TODO <>. coreutils 9.11 2026 ID(1)