pwck.1m (2010 09)

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pwck(1M) pwck(1M)
NAME
pwck, grpck - password/group file checkers
SYNOPSIS
/usr/sbin/pwck
[-l][password [shadow ]]
/usr/sbin/pwck
[-s][-l][password ]
/usr/sbin/grpck
[ file ]
DESCRIPTION
pwck scans fields in the password and shadow files and reports any inconsistencies to standard error.
The checks include validation of the number of fields, login name, user ID, group ID, and whether the
login directory and optional program exist. In addition, if the root entry shows a program, it can only be
one of: /sbin/sh, /usr/bin/csh, /usr/bin/ksh
,or/usr/bin/sh. The default password file is
/etc/passwd. The default shadow file is
/etc/shadow. For additional verification, use pwconv,to
check consistency between entries in the password and shadow files.
grpck verifies all entries in the group file and reports any inconsistencies to standard error. This
verification includes a check of the number of fields, group name, group ID, and whether all login names
appear in the password file. The default group file is
/etc/group.
Options
pwck recognizes the following options:
-s Check inconsistencies with the Protected Password database. It calls
authck -p.
-l Check encrypted password lengths that are greater than 8 characters.
DIAGNOSTICS
Group entries in
/etc/group with no login names are flagged.
WARNINGS
Successful password file validation is not sufficient for proper system operation. To help maintain con-
sistency with other system databases, editing of the password file with
vipw is discouraged. HP recom-
mends that you use sam, useradd, usermod, userdel, chfn, chsh or passwd
to edit
/etc/passwd.
HP-UX 11i Version 3 is the last release to support trusted systems functionality.
DEPENDENCIES
NFS
pwck and grpck check only the local password, shadow and group files. The Network Information Ser-
vice database is not checked.
AUTHOR
pwck was developed by AT&T and HP.
FILES
/etc/group
/etc/passwd
/etc/shadow
SEE ALSO
authck(1M), pwconv(1M), vipw(1M), group(4), passwd(4), shadow(4).
STANDARDS CONFORMANCE
pwck: SVID2, SVID3
grpck: SVID2, SVID3
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1