Dennis Kaptain dkaptain@yahoo.com.mx wrote:

...

...

Hi,

Anyone has some ways for the following text processing problem? I have a text file containing two stanzas attached below. I want to uncomment the stanza with 'host=localhost' line, while left the other stanza unchanged.

...

/* udp_send_channel { host=localhost port = 10017 ttl = 1 } */

/* udp_send_channel { host=ganglia100.ec2.example.com port = 10017 ttl = 1 } */

...

If I use command below then both stanza will be altered... Please help.

sed -i -e '/^/* udp_send_channel/, /} *// {s/^/* udp_send_channel/udp_send_channel/g; s/} *//}/g; }'

--David

this is probably WAY more than you wanted

<SNIP>

A tad simpler:

#! /usr/bin/perl -w use strict;

my $file;

open FILE, "stuff.txt" or die;

# Undefine the input record separator.

undef $/;

# Slurp the whole file in

$file = <FILE>; close FILE;

# Pattern match on the stanza we want to uncomment and uncomment it. You may need to play with # the white space in the output to get the formatting you want.

$file =~ s?/*\s*udp_send_channel {\n\s*host=localhost\n\s*port = 10017\n\s*ttl = 1\n\s*} */\n?udp_send_channel {\n host=localhost\n port = 10017\n ttl = 1\n}?;

# Write the result.

print $file;

#~~~~~~~~~~~~~~~~~End of Script~~~~~~~~~~~~~~

Cheers, Dave