$ cd gp/
$ make
$ make install

$ gp -h
gp v1.0
usage: gp [-l <int>] [-n <int>] [-p] [-h][-x digits|uppers|lowers|symbols]

$ gp
cM1@XS06d^Tf*Wpa

$ gp -l 8
x2FXZeW*

$ gp -n 3
6dd3gx+QGCoZ7uyP
$Bw8vkdkc$HOf#3&
75Cyl1V#hWItS3k*

$ gp -x symbols
dPoP8qr8MYYqV9W1

$ gp -p
2661

$ gp -p -l 6
159697