Looks like eval "-$perm \$file" will do the trick.

Update: Since testing shows that it works, I made it a statement, not a question.

Update 2: $TIMTOWTDI = eval "-$perm \"$file\""

perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^`+*^e v^#$&V"+@( NO CARRIER'

In reply to Re: interpolation with filetest operators by Chmrr
in thread interpolation with filetest operators by ybiC

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