OS Manuals

/usr/bin/grpck

PAM login and passwd utilities

From shadow 4.20.3-r3 (os), captured 2026-11-05 by running grpck --help (exit 0). permalink

Usage: grpck [options] [group [gshadow]]

Options:
  -h, --help                    display this help message and exit
  -r, --read-only               display errors and warnings
                                but do not change files
  -R, --root CHROOT_DIR         directory to chroot into
  -s, --sort                    sort entries by UID
  -S, --silence-warnings        silence controversial/paranoid warnings
Options (5)
OptionDescriptionSource
-h, --helpdisplay this help message and exithelp
-r, --read-onlydisplay errors and warnings but do not change fileshelp
-R, --root CHROOT_DIRdirectory to chroot intohelp
-s, --sortsort entries by UIDhelp
-S, --silence-warningssilence controversial/paranoid warningshelp

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.