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UNIX for Advanced & Expert Users
How To Grep Via REMSH
Post 302361659 by Korn0474 on Tuesday 13th of October 2009 07:42:17 PM
10-13-2009
How To Grep Via REMSH
Well I didn't think this would be so complicated when I started it but, well, here we are. 
I'm trying to REMSH to other servers and run a grep command. Now this works just fine until the item I'm grepping for has whitespaces in it and then UNIX gets stubborn.
Normally one would grep for a criteria with whitespaces simply by putting the item in quotes like this:
grep "Hello World" file.txt
But add in the REMSH command:
remsh server grep "Hello World" file.txt
and suddenly you get an error message:
grep: can't open World
Argh!
Now the only way I have found to get around this is to add a backslash in front of the white space like this:
remsh server grep "Hello\ World" file.txt
But the keyword is going to be input by end users and it's not reasonable to ask them to put backslashes in front of all their spaces.
Anybody have any ideas?
I'm trying to REMSH to other servers and run a grep command. Now this works just fine until the item I'm grepping for has whitespaces in it and then UNIX gets stubborn.
Normally one would grep for a criteria with whitespaces simply by putting the item in quotes like this:
grep "Hello World" file.txt
But add in the REMSH command:
remsh server grep "Hello World" file.txt
and suddenly you get an error message:
grep: can't open World
Argh!
Now the only way I have found to get around this is to add a backslash in front of the white space like this:
remsh server grep "Hello\ World" file.txt
But the keyword is going to be input by end users and it's not reasonable to ask them to put backslashes in front of all their spaces.
Anybody have any ideas?
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LEARN ABOUT ULTRIX
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)