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Full Discussion: List all file names that contain two specific words. ( follow up )
Top Forums UNIX for Advanced & Expert Users List all file names that contain two specific words. ( follow up ) Post 302986873 by rbatte1 on Thursday 1st of December 2016 05:53:31 AM
Old 12-01-2016
The difference you are seeing is probably because your find . -exec grep ..... runs the grep command individually for each file. The use of xargs in my suggestion reduces the number of command calls and therefore the number of process spawned. It may not be the best way, but it works okay.

You might be able to use a + and the end of your -exec section of the find instead of the \;, but it depends on which version of find you have.

Be aware that times may vary depending on the number of files and their sizes, so searching a very few large files may be slow with my suggestion because it will potentially read the files twice.


Glad to have helped a bit this time, but do keep experimenting if the times get longer.



Kind regards,
Robin
 

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LEARN ABOUT PHP

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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