A regex that would do that can range from simple and broad to complicated and precise. It depends on the requirements. Let's start with simple:
To also match the slash:
Last edited by Scrutinizer; 12-30-2012 at 08:46 AM..
This User Gave Thanks to Scrutinizer For This Post:
Hi
I want to do a regex test and branch based on the test result, but this doesn't seems to work :confused:
if \) ]]
then
echo success
else
echo failed
fi (1 Reply)
It can get very annoying that bash regex =~ is case-sensetive, is there a way to set it to be case-insensetive?
if ]; then
echo match
else
echo no match
fi (8 Replies)
Hello
I have a bash script where I need to do a substring replacement like this:
variable2=${variable1/foo/bar}
However, I only want "foo" replaced if it is at the end of the line.
However, this does not work:
variable2=${variable1/foo$/bar}
as you can see I'm using the $ regex for... (2 Replies)
Hello everybody,
I'm clearly not an expert in bash scripting as I've written maybe less than 10 scripts in my life. I'm trying to strip an xml string removing every tag in it. I'm using bash substitution to do so, but apparently I missed something about what is a regex for bash ...
As an... (4 Replies)
Hey all,
I have a very simple regular expression that I use when I want to allow only letters with spaces. (I know this regex has a lot of shortcomings, but I'm still trying to learn them)
isAlpha='^*$'However, when I bring this over to BASH it doesn't allow me to enter spaces.
I use the... (3 Replies)
I've been using the following regex below in a bash script on RHEL 5.5 using version
GNU bash, version 3.2.25(1)-release
I've tried using the script on RHEL 6.3 which uses GNU bash, version 4.1.2(1)-release
I assume there's been alot of changes to bash since that's quite a jump in revisions.... (12 Replies)
# check host value regex='^(||1|2|25)(\.(||1|2|25)){3}$' if ')" != "" ]; then if ]; then echo host $host not found exit 4 fi elif ]; then echo $host is an invalid host address exit 5 fi (1 Reply)
I am trying to find files using the following by using simple bash script:
if -2014 ]]; then echo "yes";fi
What I need to find are any files with date 08-**-2014 so August 2014 any files.
I can use if -2014 ]]; then echo "yes";fi
That works fine. How do I get files beginning with 08... (1 Reply)
I'm building a script that may received start and end date as parameters. I whant to make it as flexible as possible so I'm accepting epoch and date in a way that "date --date=" command may accept. In order to know if parameter provided is an epoc or a "date --date=" string I evaluate if the value... (2 Replies)
I stumbled upon a problem, which I simplified to this:
There is a list of numbers, stored in variable $LIST, lets use `seq 5 25` for demonstration.
There is a number that should be compared against this list. For demonstration I use user input - read VALUE
I am trying to compare RegEx... (2 Replies)
Discussion started by: Zorbeg
2 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)