Can I speed up my grep command?


 
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Top Forums Shell Programming and Scripting Can I speed up my grep command?
# 15  
Old 10-09-2013
You should be careful with NR>8 as it might quit before working on subsequent files.

EDIT: Not even sure if quitting after FNR>8 would be safe...
# 16  
Old 10-09-2013
I assume that by now you have figured out how to find where the MKS toolkit utilities are on your ssytem again... If not, we probably can't help you.

With a Windows operating system that old and an MKS toolkit that is even older, you probably have a 16-bit shell (which leaves you with a relatively limited address space). With 30,000+ files to process, there is a fair chance that you'll overflow the shell size limit on the contents of a shell variable even if less than 10% of your xml files contain the string you're looking for. Therefore, I'd strongly suggest saving the list of files found in a file instead of in a shell variable.
Code:
find . -name "*.xml" -print | xargs fgrep -l Status > StatusXF.txt

and show us any diagnostic output produced. With any luck, StatusXF.txt will contain the list of files you want and won't take forever to run.
# 17  
Old 10-09-2013
Quote:
Originally Posted by RudiC
You should be careful with NR>8 as it might quit before working on subsequent files.

EDIT: Not even sure if quitting after FNR>8 would be safe...
The gnuawk nextfile with FNR>8 works as I intended
Code:
find . -name "*.xml" -exec 'FNR>8{nextfile}/Status/{print FILENAME}' {} '+'


Of cause nextfile is a GNU extension so the less elegant compromise is using getline:

Code:
find . -name "*.xml" -exec awk '{while(FNR<8&&getline) if ($0 ~ "Status") print FILENAME}' {} '+'

# 18  
Old 10-10-2013
Quote:
Originally Posted by RudiC
You should be careful with NR>8 as it might quit before working on subsequent files.

EDIT: Not even sure if quitting after FNR>8 would be safe...
How do I get it to work again?

---------- Post updated at 07:20 AM ---------- Previous update was at 07:19 AM ----------

Can I simply restart the server to get my find to work as usual?
# 19  
Old 10-10-2013
My comment is just for that command / pipe. No need to restart the server.
# 20  
Old 10-10-2013
Then what do I need to do please in layman terms?

---------- Post updated at 07:26 AM ---------- Previous update was at 07:25 AM ----------

If I restart the server would that fix my problem? It's a test server.
# 21  
Old 10-10-2013
Chubler_XL already proposed a solution to overcome that problem.
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