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Full Discussion: grep current user
Top Forums UNIX for Dummies Questions & Answers grep current user Post 302291882 by rmoncello on Thursday 26th of February 2009 01:53:07 PM
Old 02-26-2009
How about going without the grep? Is there a specific reason it's needed?

Code:
[rx4521 ~]$ last
rx4521   tty7         :0               Thu Feb 26 11:00   still logged in
rick     tty2                          Thu Feb 26 10:54    gone - no logout
rick     tty2                          Thu Feb 26 10:53 - 10:54  (00:00)
rx4521   tty7         :0               Wed Feb 18 10:57 - 11:00 (8+00:02)
rx4521   tty7         :0               Wed Feb 18 10:55 - 10:56  (00:01)

wtmp begins Wed Feb 18 00:34:49 2009
[rx4521 ~]$ last $USER
rx4521   tty7         :0               Thu Feb 26 11:00   still logged in
rx4521   tty7         :0               Wed Feb 18 10:57 - 11:00 (8+00:02)
rx4521   tty7         :0               Wed Feb 18 10:55 - 10:56  (00:01)

wtmp begins Wed Feb 18 00:34:49 2009
[rx4521 ~]$

 

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LEARN ABOUT X11R4

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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