Provided by: bsdgames_2.17-23_amd64
rain — animated raindrops display
rain [-d delay]
The output of rain is modeled after the VAX/VMS program of the same name. To obtain the proper effect, either the terminal must be set for 9600 baud or the -d option must be used to specify a delay, in milliseconds, between each update. The default delay is 120.
Eric P. Scott