All Questions
Tagged with optimization grep
4
questions
1
vote
1
answer
155
views
Speed up grep usage inside bash script
I am currently working on creating a bash script that is supposed to process large log files from one of my programs. When I first started the script took around 15 seconds to complete which wasn't ...
- 11
4
votes
3
answers
116
views
Script optimisation to find duplicates filename in huge CSV
I have several CSV file from 1MB to 6GB generated by inotify script with a list of events formatted as is:
timestamp;fullpath;event;size.
Those files are formatted like this :
timestamp;fullpath;...
- 9,764
1
vote
2
answers
624
views
Does zgrep reuse recently uncompressed files?
I am calling zgrep over *.gz files in a for loop in one directory.
As the log files are huge (about 1GB each, and about 30 files), the command is taking a long time.
I see several uncompressed files ...
- 27.8k
2
votes
0
answers
396
views
How do backreferences slow down regular expression search?
Let's say I have a text file with 20 chars per line like this:
wertzuiopasdfghjkl<
asdfghjkl<yxcvbnm,.-
<yxcvbnm,.-123456789
1234567890QWERTZUIOP
QWERTZUIOPASDFGHJKL<
and so on ...
and ...
- 13.5k