$0 should not be trusted.

But if it's just about being short, I'll try too: 
open F,$0;open O,">$$.pl";print O while <F>

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Or, cheating and even less secure: 
open O,">$$.pl";print O `cat $0`

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Cheating even more: 
`cp $0 $$.pl`

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The same, but secure (if cp can be trusted): 
exec'cp',$0,"$$.pl"

[download]

2;0 juerd@ouranos:~$ perl -e'undef christmas'
Segmentation fault
2;139 juerd@ouranos:~$

[download]

In reply to Re: This is a little shorter by Juerd
in thread This is a little shorter by Anonymous Monk

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