brew install jsmartx/giter/giter

npm install giter -g

snap install giter

$ giter

NAME:
   giter - Git users manager

USAGE:
   giter [global options] command [command options] [arguments...]

VERSION:
   x.y.z

COMMANDS:
     list, ls  List all the git user config
     use       Change git user config to username
     show      Show git user detail
     add, new  Add one custom user config
     update    Update one custom user config
     del, rm   Delete one custom user config
     help, h   Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h     show help
   --version, -v  print the version