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Old 08-30-2005, 07:29 AM   #1
Prasun1
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Registered: Jun 2005
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Question Shell script to find a particular string


Hi all,

Here is something which I am trying to solve. I am trying to find the occurence ofa particular string in the files that I have. I am working in Linux and I need to trace the file which has in it that particular string.

Can you please help me with any particular command which can directly do the same ? It will be of great help if you can help develop the shell script that will do the same thing

Regards
Prasun
 
Old 08-30-2005, 07:43 AM   #2
oneandoneis2
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Can't you just use grep?

grep <string> <files>

At least in my version of grep, it tells you what file it found the string in when it outputs.
 
Old 08-30-2005, 07:57 AM   #3
Prasun1
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Hi,

Thanks a lot . But what if I have many directories and don't want to enter into each one of them to find out the reqd file which has the particular string. I want a direct command or a general script for that

Regards
Prasun
 
Old 08-30-2005, 08:12 AM   #4
oneandoneis2
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Grep can do multiple directories - just add "-r", as in:

grep -r <string> <top-level directory>

For example,
Code:
[humphdo1]:~ $ grep -r script tmp/
tmp/a.txt:-rwx------  1 humphdo1 mkgroup_l_d 85 Jul 27 10:17 script
tmp/b.txt:-rwx------  1 humphdo1 mkgroup_l_d  85 Jul 27 10:17 script
tmp/c.txt:-rwx------  1 humphdo1 mkgroup_l_d  85 Jul 27 10:17 script
tmp/d.txt:-rwx------  1 humphdo1 mkgroup_l_d  85 Jul 27 10:17 script
This searches every file in every directory within "tmp/" and tells me that four text files, [a-d].txt contain the word "script"

If you need multiple top-level directories, just write them in one after the other. It's smart enough to understand that.

Check "man grep" for more information on how to use the command.

Last edited by oneandoneis2; 08-30-2005 at 08:14 AM.
 
Old 08-30-2005, 08:37 AM   #5
hpladd
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Registered: Feb 2003
Distribution: Kubuntu
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I have never been able to receive a "return" by searching the / directory with grep. I assume (perhaps incorrectly) that there is just too much data to search, and I grow impatient and kill the search.

It is best to narrow a grep search to a specific directory. Review the directory tree and search the most probable directories.

For example: If the needed string helps with configuration, search /etc.

I found the following link by searching the web with "my friend" google:
Directory tree

What does the string do?
 
Old 08-30-2005, 09:23 AM   #6
Prasun1
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Hi ,

Thanks a lot . I was just looking for that

Regards
Prasun
 
  


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