09-18-2008
vipw
and edit the password entry belonging to that user. Either (1) remove the line, (2) change the shell to /bin/false, or (3) change the password field to "x".
There are other possibilities that are OS-specific, as Frank said. In Linux, you can look at the files in /etc/security.
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vipw(1B) SunOS/BSD Compatibility Package Commands vipw(1B)
NAME
vipw - edit the password file
SYNOPSIS
/usr/ucb/vipw
DESCRIPTION
vipw edits the password file while setting the appropriate locks, and does any necessary processing after the password file is unlocked. If
the password file is already being edited, then you will be told to try again later. The vi(1) editor will be used unless the environment
variable VISUAL or EDITOR indicates an alternate editor.
vipw performs a number of consistency checks on the password entry for root, and will not allow a password file with a "mangled" root entry
to be installed. It also checks the /etc/shells file to verify the login shell for root.
FILES
/etc/ptmp
/etc/shells
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
passwd(1), vi(1), passwd(4), attributes(5)
SunOS 5.10 14 Sep 1992 vipw(1B)