Thanks RudiC for bringing up the order of the timestamp. Yes it does matter. Please help.
Current Setup:
Logs were rotated every 4hrs and they were compressed. If the logs exceed 10gb, it will be compressed (.Z), if not script will just zipped the logs (.gz). So archive directory may sometime contains *.gz and *.Z files, and there are times that it only contains *.gz files
Goal:
Help on Loops to Grep logs per domain, in a single text file, regardless if logs are in *gz or *Z.
Not sure I understand your problem nor your code snippet.
Let's assume you have a directory $dir_arch/logs containing .gz and .Z files, all of which you want to search for 5 items in domainlist. The order of the resulting output does not seem to matter, does it? So sth. like this should do the job for you:
Let me paraphrase your problem: You have in one single directory $dir_arch/logs a bunch of zipped/compressed logfiles, which you want to scan line by line for a set of domains, outputting each line to the respective $domain_$myhost.txt file, concatenating all logfiles' entries into single respective domain.txt file.
I still don't see how the TIMESTAMP you refer to is reflected in your code snippet.
I rate it unwise to gzgrep/zcat the files several times for the different domains for performance reasons. (g)unzip once to a tmp dir, order according to timestamp required, and run sth like an awk script over all files that distributes the lines to the respective files.
Actually there are only 6 log files which covers the whole day of logs( sometimes a combination of *gz and *Z files or all *gz files or all *Z files depending on the log size upon rotation).
Logs will be huge when (g)unzip, im afraid of having an FS issue by doing so i decided to use zcat | grep and gzgrep. Im sorry but im such a newbie and not so familiar with
"awk" command as you recommended.
The scripts will look like this:
Kindly let me know if you have better solution for this. I would really appreciate your response. Thanks!
No matter what you do, disk space will come into game. zcat and gzgrep will need space to uncompress, probably temporary files somewhere on disk, or swap file space. So - find a disk that can accomodate your huge files and uncompress there to, if possible maintining file time stamps. Then run sth like
If * does not supply your files in the correct order, try to rename the files so they show up as needed in e.g. ls. The pipes in domainlist are mandatory for the regex to work!
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