1pwck(1M) System Administration Commands pwck(1M)
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6 pwck, grpck - password/group file checkers
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9 /usr/sbin/pwck [filename]
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12 /usr/sbin/grpck [filename]
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16 pwck scans the password file and notes any inconsistencies. The checks
17 include validation of the number of fields, login name, user ID, group
18 ID, and whether the login directory and the program-to-use-as-shell
19 exist. The default password file is /etc/passwd.
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22 grpck verifies all entries in the group file. This verification
23 includes a check of the number of fields, group name, group ID, whether
24 any login names belong to more than NGROUPS_MAX groups, and that all
25 login names appear in the password file. grpck also issues a warning if
26 it finds an entry (a single line) in the group file longer than 2047
27 characters. Such an entry causes group maintenance commands, such as
28 groupdel(1M) and groupmod(1M), to fail.
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31 The default group file is /etc/group.
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34 All messages regarding inconsistent entries are placed on the stderr
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38 o /etc/group
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40 o /etc/passwd
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43 See attributes(5) for descriptions of the following attributes:
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48 ┌─────────────────────────────┬─────────────────────────────┐
49 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
50 ├─────────────────────────────┼─────────────────────────────┤
51 │Availability │SUNWcsu │
52 └─────────────────────────────┴─────────────────────────────┘
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55 groupdel(1M), groupmod(1M), getpwent(3C), group(4), passwd(4),
56 attributes(5)
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59 Group entries in /etc/group with no login names are flagged.
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61 Group file 'filename' is empty
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63 The /etc/passwd or /etc/group file is an empty file.
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66 cannot open file filename: No such file or directory
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68 The /etc/passwd or /etc/group file does not exist.
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72 If no filename argument is given, grpck checks the local group file,
73 /etc/group, and also makes sure that all login names encountered in the
74 checked group file are known to the system getpwent(3C) routine. This
75 means that the login names may be supplied by a network name service.
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79SunOS 5.11 27 Aug 2008 pwck(1M)