how to replace a part of string when it contains a metacharacter in perl

Question

I have strings that look like this for example subnet 1 ims-0-x ip address

and I want to get rid of the -x so it will be subnet 1 ims-0 ip address

I tried doing this regex replace

$string=~ s/\\-x//;

which is not working. I think my issue is that I am not escaping the dash properly. please help me fix that one line.

Answer 1

You are escaping a backslash and not the dash. With two backslashes (\\), the first backslash escapes the second and it looks for a backslash in the string. It should be s/-x//. You don't need to escape the -.

use strict;
use warnings;

my $s = "subnet 1 ims-0-x ip address";
$s =~ s/-x//;
print "$s\n"

Answer 2

I tried this and its working fine, /g is to replaceAll instances. The output is "subnet 1 ims-0 ip address"

$string = "vishwassubnet 1 ims-0-x ip address";
$string =~ s/-x//g;
print $string;

https://ideone.com/9zh91T