substr and string increment can make that even easier, 

my $file = 'name_0009';
substr($file, 5, 4)++;
print $file, "\n";

[download]
which prints "name_0010".

The substr function is an lvalue, so any sort of mutator can be applied to it.

After Compline,
Zaxo

In reply to Re: adding 1 to a char of 1 by Zaxo
in thread adding 1 to a char of 1 by Anonymous Monk

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