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Full Discussion: Merge group numbers and add a column containing group names
Top Forums Shell Programming and Scripting Merge group numbers and add a column containing group names Post 302373077 by Scott on Thursday 19th of November 2009 10:48:32 AM
Old 11-19-2009
Code:
awk '/^[0-9]/ { N = $1; next } { print $1 "\t" N }' file1

adrf    1
dfgr    1
dfg     1
dfgr    2
dfgr    2
dfef    3
dfr     3
fd      3
fgrt    4
fgr     4
fgg     4
fgrt    5
fgr     5
fgr     5

 

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LEARN ABOUT SUSE

sg

newgrp(1)						      General Commands Manual							 newgrp(1)

NAME

       newgrp -  change effective group ID sg - execute command with different group ID

SYNOPSIS

       newgrp [-l] [group]
       sg group -c command

DESCRIPTION

       The  newgrp  command changes the user's real and effetive group ID by replacing the current shell with a new shell. A new shell is launched
       even if an error occours.

       A password is requested if the group has a password and the user is not listed in the group file as being a member of that group. The pass-
       word can be changed with the gpasswd(1) command.

       If the new effective group ID is not in the supplementary group list, newgrp will add the new group ID to the supplementary list, too.

       With  no  operands  and options, newgrp changes the user's group IDs (real and effective) back to the group specified in password and group
       file.

       The sg command works like the newgrp command, except that it executes the given command with /bin/sh and upon exit the group ID of the cur-
       rent shell is not changed.

OPTIONS

       -l, --login
	      reinitialize the environment as if the user logged in.

       --help Print a help list.

       -u, --usage
	      Print a short usage message.

       -v, --version
	      Print program version.

SEE ALSO

       gpasswd(1), group(5), passwd(1), passwd(5), su(1)

AUTHOR

       Thorsten Kukuk <kukuk@suse.de>

pwdutils							    April 2004								 newgrp(1)
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