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Top Forums Shell Programming and Scripting Script to monitor the pattern in the log file Post 302330840 by ghostdog74 on Thursday 2nd of July 2009 12:39:19 PM
Old 07-02-2009
use `date +%a' '%b' '%d` once is enough. don't put it together with grep. you don't want to call date everytime sed pass a line to grep.
Code:
datepattern=`date +%a' '%b' '%d` 
sed .... | grep $datepattern

with GNU awk
Code:
awk 'BEGIN{
 datepattern = "^"strftime("%a %b %d",systime())
}
/category/{
    if (x ~ datepattern){
        scrape(x)        
    }
    getline l
    if (l ~ datepattern){
        # do something with below line
    }   
}
{
 x=$0
}
function scrape(s){
        o=s
        gsub(/.*<location>/,"",o)       
        gsub(/<\/location>.*/,"",o)
        print "location: ",o
        gsub(/.*<department>/,"",x)
        gsub(/<\/department>.*/,"",x) 
        print "dept: "x
}' file

 

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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)
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