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Top Forums UNIX for Dummies Questions & Answers Please help on "if" statement. Post 302759923 by RudiC on Wednesday 23rd of January 2013 05:37:57 AM
Old 01-23-2013
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
Code:
$ domainlist="4prd|5prd|6prd|7prd|8prd"
$ awk 'match($0, D){ print $0 > substr ($0,RSTART,RLENGTH)}' D=$domainlist *

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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GZNEW(1)						      General Commands Manual							  GZNEW(1)

NAME
gznew - recompress .Z files to .gz files SYNOPSIS
gznew [ -ftv9PK] [ name.Z ... ] DESCRIPTION
gznew recompresses files from .Z (compress) format to .gz (gzip) format. If you want to recompress a file already in gzip format, rename the file to force a .Z extension then apply gznew. OPTIONS
-f Force recompression from .Z to .gz format even if a .gz file already exists. -t Tests the new files before deleting originals. -v Verbose. Display the name and percentage reduction for each file compressed. -9 Use the slowest compression method (optimal compression). -P Use pipes for the conversion to reduce disk space usage. -K Keep a .Z file when it is smaller than the .gz file SEE ALSO
gzip(1), gzmore(1), gzdiff(1), gzgrep(1), gzforce(1), gzexe(1), compress(1) BUGS
gznew does not maintain the time stamp with the -P option if cpmod(1) is not available and touch(1) does not support the -r option. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgzip | +--------------------+-----------------+ |Interface Stability | External | +--------------------+-----------------+ NOTES
Source for gzip is available in the SUNWgzipS package. GZNEW(1)
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