HOSTID(1) HOSTID(1) hostid - hostid [] --help --version Jim Meyering GNU coreutils Copyright (C) 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later . gethostid(3) info '(coreutils) hostid invocation' man man https://github.com/man-pages-zh/manpages- zh GNU coreutils 9.1 20229 HOSTID(1)