But the OP specified "preserving the original order of the elements". Hashes don't preserve order.

s^^unp(;75N=&9I<V@`ack(u,^;s|\(.+\`|"$`$'\"$&\"\)"|ee;/m.+h/&&print$&

In reply to Re^2: Perl one-liner to remove duplicate entries from PATH by muntfish
in thread Perl one-liner to remove duplicate entries from PATH by eyepopslikeamosquito

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