2 added alternative solution
source | link

Bash

while true;do echo " / / / / /";echo "/ / / / / ";done

I'm not sure this should be a code golf because there isn't a strict requirement on what the "rain" must look like.

EDIT: If you want it to look like the camera is pointing straight down use this:

while true;do echo " . . . . .";echo ". . . . . ";done

Bash

while true;do echo " / / / / /";echo "/ / / / / ";done

I'm not sure this should be a code golf because there isn't a strict requirement on what the "rain" must look like.

Bash

while true;do echo " / / / / /";echo "/ / / / / ";done

I'm not sure this should be a code golf because there isn't a strict requirement on what the "rain" must look like.

EDIT: If you want it to look like the camera is pointing straight down use this:

while true;do echo " . . . . .";echo ". . . . . ";done
1
source | link

Bash

while true;do echo " / / / / /";echo "/ / / / / ";done

I'm not sure this should be a code golf because there isn't a strict requirement on what the "rain" must look like.