cp /path/to/my_license_file /opt/gaussian/g16/license.file
rm -rf $GAUSS_SCRDIR
sudo mount -t tmpfs -o size=30G tmpfs /mnt/ramdisk export GAUSS_SCRDIR=/mnt/ramdisk
sudo mount -t tmpfs -o size=30G tmpfs /mnt/ramdisk export GAUSS_SCRDIR=/mnt/ramdisk gaussian 16 linux