03-20-2014
Sorry clippertm,
I think the problem of output all occurences is that we used the wildcard *.*
so maybe we must use sort after grep
Or use perl or awk as apmcd47 say, u know, both could solve the problem.
We know the wildcard *.* make the grep consider every first match in every file both are first occurence, may cat *.*|grep could work, but I am not able to test it when I am in a bus.
And sorry for my not very good English, let me check what's your desired output again.
a. line has 4=745 and 3078=
b. line only has 4=475 not 3078=
c. line only has 3078= not 4=475
For your addtional question:
\([1-9]\|[1-9][0-9]\|[1-9][0-9][0-9]\|1[0-9][0-9][0-9]\|2000\)
Last edited by Lucas_0418; 03-20-2014 at 07:03 AM..
This User Gave Thanks to Lucas_0418 For This Post:
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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)