Howdy.
I know this is most likely possible using sed or awk or grep, most likely a combination of them together, but how would one go about running a grep like command on a file where you only try to match your pattern to the second field in a line, space delimited?
Example:
You are... (3 Replies)
I have one comma separated file (a.txt) with two or more records all matching except for the last column.
I would like to merge all matching lines into one and consolidate the last column, separated by ":". Does anyone know of a way to do this easily?
I've searched the forum but most talked... (6 Replies)
I have a file like this. Pls help me to solve this .
(I should look for only Message : 111 and need to print the start time to end time
Need to ignore other type of messages. Ex: if first message is 111 and second message is 000 or anything else then ignore the 2nd one and print start time of the... (1 Reply)
Hi ,
I'm looking for a way to merge two lines only for a given pattern / condition.
Input :
abcd/dad + -49.201 2.09 -49.5 34 ewrew rewtre *
fdsgfds/dsgf/sdfdsfasdd +
-4.30 0.62 -49.5 45 sdfdsf cvbbv *
sdfds/retret/asdsaddsa +
... (1 Reply)
I have following pattern in a file:
00:01:38 UTC
abcd
00:01:48 UTC
00:01:58 UTC
efgh
00:02:08 UTC
00:02:18 UTC
and I need to change something like the following
00:01:38 UTC
abcd
00:01:48 UTC
XXXX
00:01:58 UTC
efgh
00:02:08 UTC
XXXX (6 Replies)
I know how to search for a pattern/regular expression in many files that I have in a directory. For example, by doing this:
grep -Ril "News/U.S." .
I can find which files contain the pattern "News/U.S." in a directory.
I am unable to accomplish about how to extend this code so that it can... (1 Reply)
Hi, hope you can help me... It seems like a straightforward problem, but I haven't had any success so far using my basic scripting and awk "skills":
I need to find a pattern /VEL/ in an input file that looks like this:
1110SOL OW25489 1.907 7.816 26.338 -0.4365 0.4100 -0.0736
... (3 Replies)
Hi,
I would like to know how to remove lines which has the same pattern as the next line through sed/awk.
Stream 39 (wan stream 7)
Stream 40 (wan stream 8)
WINQ Counter 115955 1 1613
(BYTE) 11204787 163 ... (2 Replies)
Dear gurus,
Please help this beginner to write and understand the required script. I am looking for useing awk for sed.
I have a few thousand lines file whose contain are mostly as below and I am trying to achieve followings.
1. Find a string, say user1. Then hash the line containing the... (6 Replies)
Discussion started by: ran_bon_78
6 Replies
LEARN ABOUT OSX
tie::refhash
Tie::RefHash(3pm) Perl Programmers Reference Guide Tie::RefHash(3pm)NAME
Tie::RefHash - use references as hash keys
SYNOPSIS
require 5.004;
use Tie::RefHash;
tie HASHVARIABLE, 'Tie::RefHash', LIST;
tie HASHVARIABLE, 'Tie::RefHash::Nestable', LIST;
untie HASHVARIABLE;
DESCRIPTION
This module provides the ability to use references as hash keys if you first "tie" the hash variable to this module. Normally, only the
keys of the tied hash itself are preserved as references; to use references as keys in hashes-of-hashes, use Tie::RefHash::Nestable,
included as part of Tie::RefHash.
It is implemented using the standard perl TIEHASH interface. Please see the "tie" entry in perlfunc(1) and perltie(1) for more
information.
The Nestable version works by looking for hash references being stored and converting them to tied hashes so that they too can have
references as keys. This will happen without warning whenever you store a reference to one of your own hashes in the tied hash.
EXAMPLE
use Tie::RefHash;
tie %h, 'Tie::RefHash';
$a = [];
$b = {};
$c = *main;
$d = "gunk";
$e = sub { 'foo' };
%h = ($a => 1, $b => 2, $c => 3, $d => 4, $e => 5);
$a->[0] = 'foo';
$b->{foo} = 'bar';
for (keys %h) {
print ref($_), "
";
}
tie %h, 'Tie::RefHash::Nestable';
$h{$a}->{$b} = 1;
for (keys %h, keys %{$h{$a}}) {
print ref($_), "
";
}
THREAD SUPPORT
Tie::RefHash fully supports threading using the "CLONE" method.
STORABLE SUPPORT
Storable hooks are provided for semantically correct serialization and cloning of tied refhashes.
RELIC SUPPORT
This version of Tie::RefHash seems to no longer work with 5.004. This has not been throughly investigated. Patches welcome ;-)
LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself
MAINTAINER
Yuval Kogman <nothingmuch@woobling.org>
AUTHOR
Gurusamy Sarathy gsar@activestate.com
'Nestable' by Ed Avis ed@membled.com
SEE ALSO perl(1), perlfunc(1), perltie(1)perl v5.16.2 2012-10-11 Tie::RefHash(3pm)