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Full Discussion: Find users with root UID or GID or root home
Top Forums Shell Programming and Scripting Find users with root UID or GID or root home Post 302877981 by rbatte1 on Wednesday 4th of December 2013 05:56:49 AM
Old 12-04-2013
So, The UID & GID for the root account are both zero. The fields are separated by : so you can:
Code:
grep ":0:" /etc/passwd

Does that give you a starter? Have a look at the cut manual page if you need to slice up the output to give you just the names.



I hope that this helps,

Robin
Liverpool/Blackburn
UK
 

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LEARN ABOUT PLAN9

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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