There isn't one at all, obfuscated or otherwise.

The thing that has always prevented anyone from writing such a program is that it's very hard! It's easy to do a really bad job, but to do a good job, you have to be very clever. For example, suppose you see this: 

    set bar=`echo $foo | awk '{print $5}' | cut -c1-4`

[download]
The obvious (bad) translation is: 
    $bar=`echo $foo | awk '{print \$5}' | cut -c1-4`

[download]
But the right translation is: 
    $bar = substr((split($foo))[4], 0, 4);

[download]
Anyway, aside from an April Fool's joke that Randal perpetrated a few years ago, there is no shell-to-perl translator that I know of.

In reply to Re: csh-perl xlator by Dominus
in thread csh-perl xlator by Anonymous Monk

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