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Old 09-10-2008, 05:32 AM   #1
Registered: Jun 2002
Distribution: Centos 4.4
Posts: 82

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How to find which file has a string when large number of files


I have about 1000 files adding up to about 1GB in size. So performance is important. My knowledge is limited, just enough to get into trouble.

I tried running this in the current directory of the files

>for aFile in ls *.I; do awk '/aString/ { print $0 } $aFile; done;

Which I know only prints the line for where it is found, but wanted to start somewhere. But it just presents a prompt so clearly I do not understand something about the interaction between the for loop and awk.

Suggestions for the most efficient approach to achieving this?


Old 09-10-2008, 05:45 AM   #2
Senior Member
Registered: Oct 2003
Location: UK
Distribution: Kubuntu 12.10 (using awesome wm though)
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If you just want to print the names of the files which contain some string, this will be faster than using awk:
fgrep -l aString *.I

Last edited by matthewg42; 09-10-2008 at 07:46 AM. Reason: adding -l option
Old 09-10-2008, 07:06 AM   #3
Registered: Jun 2002
Distribution: Centos 4.4
Posts: 82

Original Poster
Rep: Reputation: 15
Thx, it is fast!


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