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Full Discussion: script to modify /etc/shadow
Top Forums Shell Programming and Scripting script to modify /etc/shadow Post 302236761 by tjay83 on Tuesday 16th of September 2008 09:38:06 AM
Old 09-16-2008
one last thing;
after user enters username
I want to check the username with the usernames in the /etc/shadow.
If the entered username doesnt exist, I will return error,
else I will lock the account with
sed -i "/$user/s/\([^:]*:\)\{1\}/&*LK/" /etc/shadow

How can I do that?
 

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LEARN ABOUT SUSE

lppasswd

lppasswd(1)							    Apple Inc.							       lppasswd(1)

NAME

       lppasswd - add, change, or delete digest passwords.

SYNOPSIS

       lppasswd [ username ]
       lppasswd -a [ -g groupname ] username
       lppasswd -x username

DESCRIPTION

       lppasswd  adds, changes, or deletes passwords in the CUPS digest password file, passwd.md5. When run by a normal user, lppasswd will prompt
       for the old and new passwords.  When run by the super-user, lppasswd can add new accounts (-a username), change	existing  accounts  (user-
       name), or delete accounts (-x username) in the digest password file. Digest usernames do not have to match local UNIX usernames.

OPTIONS

       lppasswd supports the following options:

       -g groupname
	    Specifies a group other than the default system group.

SECURITY ISSUES

       By  default,  the lppasswd program is not installed to allow ordinary users to change their passwords. To enable this, the lppasswd command
       must be made setuid to root with the command:
       chmod u+s lppasswd

       While every attempt has been made to make lppasswd secure against exploits that could grant super-user privileges  to  unprivileged  users,
       paranoid system administrators may wish to use Basic authentication with accounts managed by PAM instead.

SEE ALSO

       lp(1), lpr(1),
       http://localhost:631/help

COPYRIGHT

       Copyright 2007-2009 by Apple Inc.

22 February 2008						       CUPS							       lppasswd(1)
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