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Find something inside a file

 
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# 1  
Old 01-31-2010
Find something inside a file
Hi,
this is the problem i'm facing i need a check some file having some word like gzip or tar ,the way i normally do is
Code:
grep gzip filename

the thing is that i had some 1000 files to be checked is that the only way or can i customize it by some script ,i know there is some way ,but i need some lead into it
# 2  
Old 01-31-2010
If I understand you correctly, you need to search for the occurrence of a word like e.g. "gzip" in a bunch of uncompressed files. If those file are called filename<something>.ext then normally you can use:
Code:
grep gzip filename*.ext

It may be that there are too many files and the number of arguments to the grep command becomes too large. In that case you can use something like:
Code:
ls|while read f 
do
  case $f in
    filename*.ext) grep -H gzip $f
  esac
done

# 3  
Old 01-31-2010
Code:
grep -l gzip *

Will list the files that contain the work gzip, searching all the files in the current directory
# 4  
Old 02-01-2010
Quote:
Originally Posted by Scrutinizer
If I understand you correctly, you need to search for the occurrence of a word like e.g. "gzip" in a bunch of uncompressed files. If those file are called filename<something>.ext then normally you can use:
Code:
grep gzip filename*.ext

It may be that there are too many files and the number of arguments to the grep command becomes too large. In that case you can use something like:
Code:
ls|while read f 
do
  case $f in
    filename*.ext) grep -H gzip $f
  esac
done

hi
i put the code in a shell script and and ran it nothing happens
do i have do pass the file if so how can i and one more thing i want to make a search by user interactive like it has to ask what word you have to search something like that
# 5  
Old 02-01-2010
What happens if you enter:
Code:
ls filename*.ext

It should list all the files you'd like to grep. Of course these names are not to literal names and you should change them to your particular situation.

Quote:
Originally Posted by malickhat
[..]nd one more thing i want to make a search by user interactive like it has to ask what word you have to search something like that
You could pass the string as a command line parameter:
Code:
searchstring="$1"

or you can ask for it interactively
Code:
echo "Enter searchstring:"
read searchstring

Then you can grep like so:
Code:
grep "$searchstring" filename*.ext

Last edited by Scrutinizer; 02-01-2010 at 03:14 AM..
 
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