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Full Discussion: pattern match and replace another pattern in same line
Top Forums Shell Programming and Scripting pattern match and replace another pattern in same line Post 302574863 by ahamed101 on Friday 18th of November 2011 01:39:05 PM
Old 11-18-2011
Using sed alone...
Code:
sed -i '/^username/{s!/bin/bash!/sbin/nologin!g}' /etc/passwd

This will modify the file /etc/passwd... so be careful... You can test it out first by removing -i option...

--ahamed
Last edited by ahamed101; 11-18-2011 at 02:51 PM.. Reason: code change!
 

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LEARN ABOUT DEBIAN

mkpwdict

mkpwdict(1M)						  System Administration Commands					      mkpwdict(1M)

NAME

       mkpwdict - maintain password-strength checking database

SYNOPSIS

       /usr/sbin/mkpwdict [-s  dict1,... ,dictN] [-d destination-path]

DESCRIPTION

       The mkpwdict command adds words to the dictionary-lookup database used by pam_authtok_check(5) and passwd(1).

       Files containing words to be added to the database can be specified on the command-line using the -s flag. These source files should have a
       single word per line, much like /usr/share/lib/dict/words.

       If -s is omitted, mkpwdict will use the value of DICTIONLIST specified in /etc/default/passwd (see passwd(1)).

       The database is created in the directory specified by the -d option. If this option is omitted, mkpwdict uses  the  value  of  DICTIONDBDIR
       specified in /etc/default/passwd (see passwd(1)). The default location is /var/passwd.

OPTIONS

       The following options are supported:

       -s

	   Specifies a comma-separated list of files containing words to be added to the dictionary-lookup database.

       -d

	   Specifies the target location of the dictionary-database.

FILES

       /etc/default/passwd

	   See passwd(1).

       /var/passwd

	   default destination directory

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       passwd(1), attributes(5), pam_authtok_check(5)

SunOS 5.10							    1 Jun 2004							      mkpwdict(1M)
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