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Full Discussion: Need to replace last field in a file,if first field matches
Top Forums Shell Programming and Scripting Need to replace last field in a file,if first field matches Post 302976702 by Sumanthsv on Monday 4th of July 2016 05:52:03 AM
Old 07-04-2016
Need to replace last field in a file,if first field matches
Hi,

Need to replace last field in a file(/etc/passwd) ,if first filed matches with particular username.

Scenario:

Code:
cat testfor1
deekshi:x:7082:7082::/home/deekshi:/bin/bash
harini1:x:7083:7083::/home/harini1:/bin/bash

Here,if first field contains "deekshi", then i should replace /bin/bash with /bin/nologin

Expected Output:

Code:
cat testfor1
deekshi:x:7082:7082::/home/deekshi:/bin/nologin
harini1:x:7083:7083::/home/harini1:/bin/bash

As of now i tried like below,

Code:
sed '/deekshi/s|$|/bin/nologin|' testfor1

But its not working


TIA
 

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LEARN ABOUT DEBIAN

node.perms

NODE.PERMS(5)						     Linux Programmer's Manual						     NODE.PERMS(5)

NAME

       node.perms - LinuxNode permissions file.

DESCRIPTION

       Node.perms  file  is  read  at program startup with the knowledge of users username (call), connection type (AX.25, NET/ROM, ROSE, TCP/IP),
       peers IP address (for TCP/IP) and port name (for AX.25). The first entry matching this information is taken and user is asked for  password
       and given permissions according to it.

       The  lines within node.perms must either be a comment line, which starts with a # in the first column, or a permission entry in the follow-
       ing format, each field being delimited by white space:

	      username type portname password permissions

       The field descriptions are:

       username      This is matched against users username (call) without SSID. An asterisk (*) matches any username.

       type	     This is matched against the type of the connection to user.  Possible values for this field are:

		     *	    matches any type of connection.

		     ax25   matches users coming in with AX.25.

		     netrom matches users coming in with NET/ROM.

		     rose   matches users coming in with ROSE.

		     local  matches TCP/IP connections where users host is in "local" network as defined in node.conf(5).

		     ampr   matches TCP/IP connections where users host is in amprnet (44.0.0.0/8).

		     inet   matches TCP/IP connections where users host is neither in "local" network nor in amprnet.

		     host   matches users starting LinuxNode from shell.

       portname      If user is coming in with AX.25 this field is matched against the local port name the user is coming in via. An asterisk  (*)
		     matches any port name.

       password      If  the previous tree fields match and this field is not a single asterisk (*) the user is asked for a password. The password
		     is then matched against this field.

       permissions   This field represents a a bitmask of operations the user is permitted to do. It is a sum of the values listed here:

		     1	    permits logging in even if no other permissions are given.

		     2	    permits outgoing AX.25 connects.

		     4	    permits outgoing NET/ROM connects.

		     8	    permits telneting to hosts in the "local" network as defined in node.conf(5).

		     16     permits telneting to hosts in amprnet.

		     32     permits telneting to hosts neither in the "local" network nor in amprnet.

		     64     permits using hidden ports in outgoing AX.25 connections.  (See HiddenPorts command in node.conf(5).)

		     128    permits outgoing ROSE connects.

		     256    The no-escape flag. Disables the escape mechanism for this user.

FILES

       /etc/ax25/node.perms

SEE ALSO

       node(8), node.conf(5), axports(5), ax25(4).

Linux								   16 June 1999 						     NODE.PERMS(5)
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