perl -nE"$s^=$_}{say length$s"    # Switch quotes for bash
perl -nE "\$Z[y///c]}{say$#Z"     # Switch quotes for bash
perl -nE"\$Z[y///c]}{say$#Z"      # Switch quotes for bash
perl -nE\$Z[y///c]}{say$#Z        # cmd specific
     1234567890123456789012345