pipe grep command Post: 302316303

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Top Forums Shell Programming and Scripting pipe grep command Post 302316303 by epro66 on Thursday 14th of May 2009 05:34:36 PM

05-14-2009

Registered User

pipe grep command

Hi all,
Can someone help me with the following problem.
I am executing the following command:
(search for occurences of 'error' in files that match cl-*.log expression)
> grep -cw -i --max-count=1 'error' cl-*.log
this command outputs:
cl-apache.log:1
cl-apache_error.log:1
cl-apache_warn.log:1
cl-apache_2009_05_13.log:1

Than I want to filter the results from this command and exclude lines
that are matching some user entered wildcard (lets say: exclude files
from the result that match 'cf-*err*'). So I tried the following command:
> grep -cw -i --max-count=1 'error' cl-*.log | grep -v 'cf-*err*'

I was expecting that the second command (grep -v 'cf-*err*') will
filter the first command OUTPUT, but instead, it saerch 'cf-*err*'
WITHIN each file Content, instead of fcommand output.

Any help is appretiated,
Thx

epro66

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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)