Further understanding the Grep! lol


 
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# 1  
Old 10-07-2013
Further understanding the Grep! lol

If I use the grep command for parsing files, does it stop parsing right after it finds the matching pattern or does it continue to parse that document?
Code:
grep -l "status" *.xml

# 2  
Old 10-07-2013
Hi,

Could you please give your exact requirement so that we can provide you a better solution/suggestion on same.


Thanks,
R. Singh
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# 3  
Old 10-07-2013
Of course its going to give list of all the files which matches the criteria in that particular directory...
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# 4  
Old 10-07-2013
Quote:
Originally Posted by emc^24sho
If I use the grep command for parsing files, does it stop parsing right after it finds the matching pattern or does it continue to parse that document?
Code:
grep -l "status" *.xml

Most implementations of the awk utility will stop reading the current file when a match is found when the -l is given on the command line. (There is no requirement that grep quit reading the file when a match is found, but it is more efficient if it is done that way and most implementations of grep try to be efficient.) Note also that if the data being read is from standard input rather than from a path operand given on the command line, that might be treated differently.
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# 5  
Old 10-07-2013
Confirmed.
I tested a bunch of grep versions. They all stop reading the current file when invoked with -l and finding a match.
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# 6  
Old 10-07-2013
From GNU grep manual:
Code:
-l, --files-with-matches
       Suppress normal output; instead print the name of each input file from which output would normally have been printed.  The 
scanning will stop on the first match.

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