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Full Discussion: sed to find first appearance and append string
Top Forums Shell Programming and Scripting sed to find first appearance and append string Post 302496477 by vkk on Monday 14th of February 2011 07:35:29 AM
Old 02-14-2011
sed to find first appearance and append string
I have a file like below

Code:
#GROUP A belongs to Asia
GROUP A jojh hans local admin
GROUP A gege fans michel jing jong

#GROUP U belongs to USA
GROUP U jeff goal hello world

My requirement is to grep for first apperence of GROUP A which is not commented and append my name to end of file.
I tried the below...but it is appending to each line where GROUP A is there.

Code:
sed '/GROUP A/s/$/ vkk/' $i > $i.new

Last edited by pludi; 02-14-2011 at 08:38 AM.. Reason: please use code tags
 

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LEARN ABOUT CENTOS

group

GROUP(5)						     Linux Programmer's Manual							  GROUP(5)

NAME

       group - user group file

DESCRIPTION

       The /etc/group file is a text file that defines the groups on the system.  There is one entry per line, with the following format:

	      group_name:password:GID:user_list

       The fields are as follows:

       group_name  the name of the group.

       password    the (encrypted) group password.  If this field is empty, no password is needed.

       GID	   the numeric group ID.

       user_list   a list of the usernames that are members of this group, separated by commas.

FILES

       /etc/group

BUGS

       As the 4.2BSD initgroups(3) man page says: No-one seems to keep /etc/group up-to-date.

SEE ALSO

       login(1), newgrp(1), getgrent(3), getgrnam(3), passwd(5)

COLOPHON

       This  page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2010-10-21								  GROUP(5)
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