In Perl there are a number of ways you could accomplish this task.

1. You could use substr, since every element you have listed has the same number of characters before the '=' sign.
2. You could use split, splitting on the '=' and keeping only the second half.

   my $value = (split /\=/, $string)[1];

3. You could use a capturing regular expression to store all characters after the equals sign.

   my ($value) = $string =~/\=(.*)$/;

4. You could use a regular expression to substitute the leading characters away.

   $string =~ s/^[^=]*\=//;

I'm sure people can come up with a host of other approaches, but this should give you some ideas.

Update: Fixed typos in #4. Thanks ikegami.