not wanting to delete somebody's home directory

[mick crane <mick.crane@gmail.com>]

hello,
I doing some code in perl and I'm not very good at it.
code makes some images and saves them to a directory.
If the directory doesn't exist it gets made and if it does exist all the 
files in it get deleted before putting some new ones in.
I'm thinking that if I ever give it to somebody it's possible they might 
call the directory
"~/" or something and end up deleting all their files, which I'd like to 
avoid.
How would that best be avoided ?
Is that something to do with chroot which I don't know anything about.

mick

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