Additionally you need to look at tainted variables.

Its a really bad idea to take user input and throw it to system ( or a database ) - What if the username input was: 

" || ls && 0 &&

[download]

Of course you could replace ls with whatever exciting nefarious command you choose but thats the idea ...

In reply to Re^2: Perl calling Linux commands by tmharish
in thread Perl calling Linux commands by MVRS

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