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Re: Re: How do you clean up user specified filenames?

by tomhukins (Curate)
on Feb 21, 2001 at 21:13 UTC ( [id://59965]=note: print w/replies, xml ) Need Help??


in reply to Re: How do you clean up user specified filenames?
in thread How do you clean up user specified filenames?

The problem with tr/A-Za-z_.-//dc; is that the . character could be used to attempt to open the current or parent directory.

I'm paranoid enough to do something like 

tr/A-Za-z_.-//dc;
s/^\.+$//;

[download]
to make sure the user doesn't enter a string containing only dots.

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