Installation guide

# grpck
users:*:15:diaz,kalle,marcy,chris,farkle
farkle - Logname not found in password file
1
mem:*:3:
Null login name
2
+:
Too many/few fields
3
1 Refer to Section 9.2.1.1 for information on adding a user account to the
passwd file.
2 Ignore this message.
3 Ignore this message. These characters are necessary for running NIS.
Refer to the grpck
(8) reference page for more information.
The pwck command checks for any inconsistencies in the passwd file. The
pwck command verifies the number of fields, login name, UID, GID,
existence of a login directory, and optional program name. If any of the
fields are missing, pwck writes the inconsistencies to standard output. For
example:
# pwck
nobody:*Nologin:4294967294:4294967294:anonymous NFS user:/:
Invalid UID
1
Invalid GID 2
Optional shell file not found 3
1 Refer to Section 9.1.4 for valid UID numbers.
2 Refer to Section 9.1.4 for valid GID numbers.
3 Ignore this message.
Refer to the pwck
(8) reference page for more information.
9.3 Changing Information in a User Account
This section describes how to change information about a user account. The
following tasks are discussed:
• Changing passwords
• Changing the user_info field
• Changing the login shell
• Setting disk quotas
9.3.1 Changing Passwords
You should periodically change the root password. This protects the system
from access by system users who should not have root access, as well as
from external intruders.
9–14 Administering User Accounts and Groups