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Full Discussion: How to grep for message and if found display filename?
Top Forums Shell Programming and Scripting How to grep for message and if found display filename? Post 302443849 by bartus11 on Tuesday 10th of August 2010 08:23:03 AM
Old 08-10-2010
Code:
find . -type f -name "*.log" | xargs -i bash -c "tail -n 2 {} | grep -v FAILED | grep FAIL && basename {}"



---------- Post updated at 07:23 AM ---------- Previous update was at 07:20 AM ----------
Quote:
Originally Posted by pravin27
Hi Bartus11,

Could you please explain the xargs code ?
Code:
find . -type f -name "*.log" | xargs -i bash -c "tail -n 2 {} | grep -w FAIL && echo {}"

I think instead of using grep two times we can use grep with -w option.
With xargs -i, you can use "{}" where arguments need to be passed. So here it will be substituted with same file name in two places for every file passed from "find" utility.
 

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LEARN ABOUT XFREE86

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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