You could probably just try making it and if it succeeds it's valid. 

use File::Path;
eval { mkpath([...args...]) };
# deal with failure or succes

[download]

However, I'm with graff. You should whitelist the smallest set of input you'll allow first -- like [-_a-z/] -- and pass it through Path::Class or something to normalize it, or you'll eventually end up with a bad surprise given enough user input.

In reply to Re: How to validate a directory string? by Your Mother
in thread How to validate a directory string? by rapide

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