pwck(1M)

pwck, grpck -- password/group file checkers

Synopsis

/usr/sbin/pwck [file]

/usr/sbin/grpck [file]

Description

pwck scans the password file and notes any inconsistencies. The checks include validation of the number of fields, login name, user ID, group ID, and whether the login directory and the program-to-use-as-shell exist. The default password file is /etc/passwd.

grpck verifies all entries in the group file. This verification includes a check of the number of fields, group name, group ID, whether any login names belong to more than NGROUPS_MAX groups and that all login names appear in the password file. The default group file is /etc/group.

Files

/etc/group
/etc/passwd

Diagnostics

Group entries in /etc/group with no login names are flagged.

References

group(4), passwd(4)