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Top Forums Shell Programming and Scripting loop through logged on users or file? Post 302077100 by vgersh99 on Monday 19th of June 2006 02:03:22 PM
Old 06-19-2006
Quote:
Originally Posted by Ambikesh
Code:
#!/bin/ksh
who | while read user junk
do
   realname=`grep $user /etc/passwd | awk ' { FS=":"; print $5}'`
   print "User Id - $user and real name - $realname. \n"
done

why do you have both 'grep' and 'awk AND why do you have 'FS' inside the curly braces??'

Last edited by vgersh99; 06-19-2006 at 03:25 PM..
 

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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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