/usr/share/gEDA/sym/vhdl/verilog2vhdl.sh is in geda-symbols 1:1.8.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | for dev in and nand or nor xor xnor
do
for i in 2 3 4 5 6 7 8 9
do
sed -f script.sed <../verilog/$dev$i-1.sym |sed -e s/device=$dev/device=$dev$i/ >$dev$i-1.sym
done
done
|