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Full Discussion: grep with variable
Top Forums Shell Programming and Scripting grep with variable Post 302195210 by ozvena on Wednesday 14th of May 2008 02:24:37 PM
Old 05-14-2008
grep with variable

Hi, I can't get this script to work (returns 0, should return 3):

Code:
$ cat A.lst | \
while read LINE
do
        echo "$LINE"
        grep -c "$LINE" B.tmp
done> > > > >
Socket
0
$

but in contrast this one works fine (returns 3 as expected):

Code:
$  LINE=Socket
$ grep -c $LINE B.tmp
3
$


Note: A.lst contains one line with a string: Socket
B.tmp contains 3 lines with strings: Socket

Thank you!
 

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IO::Socket::UNIX(3perl) 				 Perl Programmers Reference Guide				   IO::Socket::UNIX(3perl)

NAME
IO::Socket::UNIX - Object interface for AF_UNIX domain sockets SYNOPSIS
use IO::Socket::UNIX; DESCRIPTION
"IO::Socket::UNIX" provides an object interface to creating and using sockets in the AF_UNIX domain. It is built upon the IO::Socket interface and inherits all the methods defined by IO::Socket. CONSTRUCTOR
new ( [ARGS] ) Creates an "IO::Socket::UNIX" object, which is a reference to a newly created symbol (see the "Symbol" package). "new" optionally takes arguments, these arguments are in key-value pairs. In addition to the key-value pairs accepted by IO::Socket, "IO::Socket::UNIX" provides. Type Type of socket (eg SOCK_STREAM or SOCK_DGRAM) Local Path to local fifo Peer Path to peer fifo Listen Create a listen socket If the constructor is only passed a single argument, it is assumed to be a "Peer" specification. NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE As of VERSION 1.18 all IO::Socket objects have autoflush turned on by default. This was not the case with earlier releases. NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE METHODS
hostpath() Returns the pathname to the fifo at the local end peerpath() Returns the pathanme to the fifo at the peer end SEE ALSO
Socket, IO::Socket AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>. COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2010-12-30 IO::Socket::UNIX(3perl)
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