I would like to do this:
replace the word "prod" with the word "special" but it may occur through the file naturally without a command, I only want it to happen when it has a specific command in front of it. The command will always look like this
<IMG,###,###,##,>prod/directory/IMG/file
... (4 Replies)
so i have been trying to learn how to manipulate text on my own and have gotten stumped...
let's say i have a text file that says (highly simplified):
people ordinary
How would swap the order of the words..
I know i need to use sed and some kind of back reference but cannot make it... (2 Replies)
Hi all,
I'm writing a script that replaces a value in a file. The file is formatted as follows:
So, for this example, I'd like to replace the value for param_two. The value for param_two can be a one, or two-digit number. It replaces the value in file.cfg, and directs the... (9 Replies)
From my understanding when using regex1|regex2 the matching process tries each alternative in turn, from left to right, and the first one that succeeds is used.
When im trying to extract the name from those examples:
A) name.can.be.different.20.03.2009.boom
B)... (2 Replies)
I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly:
if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Hi,
I tried to extract the time from `date` with sed.
(I know it works with `date +%H:%M:%S` as well)
I got three solutions of which just one worked. I thought "+" should repeat the previous expression 1 or more times and {n} should repeat the previous expression n times.
$ date
Thu... (9 Replies)
Hi,
I need to use the regex in the replacement string in SED command.
something like
sed -e ' s/\(^\{5\}\).\{150\}\(.*\)$/\10\{30\}1\{30\}A\{60\}B\{30\}\2/' abc
which means for all the lines in file abc that starts with 5 characters, I need to replace character 6-151... (6 Replies)
I plan to do something like this in awk that's embedded in a shell script.
I have extracted a text file using awk and the output is
before example:
<USDOLLARS|xxx>
I want to use get rid of the starting "<" and anything after the pipe "|"
after example:
USDOLLARS
How do I do that??
I... (8 Replies)
Hi all, please can anyone show me how to use sed and regular expressions to achieve the following.
If a line contains a capital A followed by exactly 5 or 6 characters followed by an angled bracket then insert an asterix before the angled bracket.
So:
XCONFIGA12345<X
Becomes:
... (5 Replies)
I am using the following sed script to remove new lines (\r\n and \n), except from lines starting with >:
sed -i ':a /^>/!N;s/\r\n\(\)/\1/;s/\n\(\)/\1/;ta'
Is there a way to include both \r\n and \n in one regex to avoid the second substitute script (s/\n\(\)/\1/)? (4 Replies)
Discussion started by: Xterra
4 Replies
LEARN ABOUT DEBIAN
tie::hash::regex
Tie::Hash::Regex(3pm) User Contributed Perl Documentation Tie::Hash::Regex(3pm)NAME
Tie::Hash::Regex - Match hash keys using Regular Expressions
SYNOPSIS
use Tie::Hash::Regex;
my %h;
tie %h, 'Tie::Hash::Regex';
$h{key} = 'value';
$h{key2} = 'another value';
$h{stuff} = 'something else';
print $h{key}; # prints 'value'
print $h{2}; # prints 'another value'
print $h{'^s'}; # prints 'something else'
print tied(%h)->FETCH(k); # prints 'value' and 'another value'
delete $h{k}; # deletes $h{key} and $h{key2};
or (new! improved!)
my $h : Regex;
DESCRIPTION
Someone asked on Perlmonks if a hash could do fuzzy matches on keys - this is the result.
If there's no exact match on the key that you pass to the hash, then the key is treated as a regex and the first matching key is returned.
You can force it to leap straight into the regex checking by passing a qr'ed regex into the hash like this:
my $val = $h{qr/key/};
"exists" and "delete" also do regex matching. In the case of "delete" all vlaues matching your regex key will be deleted from the hash.
One slightly strange thing. Obviously if you give a hash a regex key, then it's possible that more than one key will match (consider
c<$h{qw/./}>). It might be nice to be able to do stuff like:
my @vals = $h{$pat};
to get all matching values back. Unfortuately, Perl knows that a given hash key can only ever return one value and so forces scalar context
on the "FETCH" call when using the tied interface. You can get round this using the slightly less readable:
my @vals = tied(%h)->FETCH($pat);
ATTRIBUTE INTERFACE
From version 0.06, you can use attributes to define your hash as being tied to Tie::Hash::Regex. You'll need to install the module
Attribute::Handlers.
METHODS
FETCH
Get a value from the hash. If there isn't an exact match try a regex match.
EXISTS
See if a key exists in the hash. If there isn't an exact match try a regex match.
DELETE
Delete a key from the hash. If there isn't an exact match try a regex match.
AUTHOR
Dave Cross <dave@mag-sol.com>
Thanks to the Perlmonks <http://www.perlmonks.org> for the original idea and to Jeff "japhy" Pinyan for some useful code suggestions.
COPYRIGHT
Copyright (C) 2001-8, Magnum Solutions Ltd. All Rights Reserved.
LICENSE
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO perl(1).
perltie(1).
Tie::RegexpHash(1)perl v5.10.0 2008-06-30 Tie::Hash::Regex(3pm)