I use grep to check for a string that validates data in a file, it works great but the problem is that the file is becoming too big and gerp has started hurting the response time to users. Since I only need to find the first occurrence I have been looking for ways to stop grep for scanning the rest of the file (6gb) but I haven't had much luck.
One way is using the -m parameter, unfortunately thta is not avaialble in the grep version we have in our AIX (not sure if I can update it). I also found a small scrip that worked fine at the beginning but in the long run is takes even more time that grep:
this works great if the matches are found at the beginning of the file but when I tested with a string that is at the middle or end it took even more time than grep alone to return an asnwer and stop.
I've researched in several palces but I haven found anything else (in a simple way) that could do the trick, I tried awk and also takes longer that grep when the match is in the middle of the file.
Any suggestion would be great.
Last edited by Franklin52; 04-01-2010 at 12:27 PM..
Reason: Please use code tags!
Hi,
I was wondering if there was a way to change the disk device files ex. /dev/dsk/cxtxd0 ?
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Hey Guys,
Wondering if there is a way to do the following
I have a file called test.txt
abc
def
abc
abc
def
I have a pattern file called pattern.txt containing the following
abc
def
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Address 2
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cat testfile
xx.xx.xx.xx:/share4 /nfsshare15 nfs defaults yes no
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Discussion started by: sumanthupar
6 Replies
LEARN ABOUT PHP
zgrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)