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Execute "find . -exec grep" in desending Order

 
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# 1  
Old 02-06-2009
Execute "find . -exec grep" in desending Order
Hi Xperts,

I've one query for you. Please help me solving this.

Below command is taking long time to fetch names of the files which contain string "475193976" because folder contains millions of files. I agree that this is what this function suppose to do. Correct.. But can it be possible that this find runs descendingly instead of running ascendingly?

find . -exec grep -l '475193976' {} \;

Lets suppose i've a folder which contain 10 files. Name of these files are below:
date format is (YYYMMDD-HHMMSS)
1st file name = 20080406-011603-132_ICH830_20090206-011519_471
2 = 20080506-011603-132_ICH830_20090206-011519_471
3 = 20080606-011603-132_ICH830_20090206-011519_471
4 = 20080706-011603-132_ICH830_20090206-011519_471
5 = 20080806-011603-132_ICH830_20090206-011519_471
6 = 20081006-011603-132_ICH830_20090206-011519_471
7 = 20081106-011603-132_ICH830_20090206-011519_471
8 = 20081206-011603-132_ICH830_20090206-011519_471
9 = 20090106-011603-132_ICH830_20090206-011519_471
10 = 20090206-011603-132_ICH830_20090206-011519_471

Now if i use the above command "find . -exec grep -l '475193976' {} \;", this will start searchin files from 1 to 10..

My problem is :- Can it run backwards??. i.e 10 to 1. By this way i can get the latest modified file and as soon as i get that file i can cancel the nxt search because my Motive is to find the Latest timestamp file which is "20090206-011603-132_ICH830_20090206-011519_471" in above example. Also there are total of more than 1 lakhs files in folder where we're using find function.

I'll be very thankful If someone can help me in this. ALso i feel i explain the problem is simple and detailed manner just because i can get a good result from you people.

Waiting for your response.

Thanks in Advance.
# 2  
Old 02-06-2009
Well, quick question:

Must the find be used to find files recursively?
ie are their sub-directories you want to search also?
# 3  
Old 02-06-2009
If you don't have to use 'find' then I'd do the following:

cd <mydir>
for FILE in `ls -t`
do
grep -l '475193976' $FILE
done
# 4  
Old 02-06-2009
Quote:
Originally Posted by quirkasaurus
Well, quick question:

Must the find be used to find files recursively?
ie are their sub-directories you want to search also?

No not necessarily. Let it search one directory only.
# 5  
Old 02-06-2009
No not necessarily. Let it search one directory only.
# 6  
Old 02-06-2009
Quote:
Originally Posted by homeyjoe
If you don't have to use 'find' then I'd do the following:

cd <mydir>
for FILE in `ls -t`
do
grep -l '475193976' $FILE
done
unixsearch.file1: 0403-029 There is not enough memory available now.

Im getting this message.
# 7  
Old 02-06-2009
A variation on homeyjoe's solution that won't take up the memory:

Code:
cd <mydir>
/bin/ls -t |
while read file ; do
  grep -l '475193976' $file
done |
  tee /somewhere/else/my_log

Last edited by quirkasaurus; 02-06-2009 at 05:30 PM.. Reason: oops!! log had to elsewhere
 
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