05-14-2009
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
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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)