Git is an example of several common subcommand patterns.
Help:
```console
$ git
? failed
git
A fictional versioning CLI
USAGE:
git[EXE] <SUBCOMMAND>
OPTIONS:
-h, --help Print help information
SUBCOMMANDS:
add adds things
clone Clones repos
help Print this message or the help of the given subcommand(s)
push pushes things
stash
$ git help
git
A fictional versioning CLI
USAGE:
git[EXE] <SUBCOMMAND>
OPTIONS:
-h, --help Print help information
SUBCOMMANDS:
add adds things
clone Clones repos
help Print this message or the help of the given subcommand(s)
push pushes things
stash
$ git help add
git[EXE]-add
adds things
USAGE:
git[EXE] add <PATH>...
ARGS:
<PATH>... Stuff to add
OPTIONS:
-h, --help Print help information
```
A basic argument:
```console
$ git add
? failed
git[EXE]-add
adds things
USAGE:
git[EXE] add <PATH>...
ARGS:
<PATH>... Stuff to add
OPTIONS:
-h, --help Print help information
$ git add Cargo.toml Cargo.lock
Adding ["Cargo.toml", "Cargo.lock"]
```
Default subcommand:
```console
$ git stash -h
git[EXE]-stash
USAGE:
git[EXE] stash [OPTIONS]
git[EXE] stash <SUBCOMMAND>
OPTIONS:
-h, --help Print help information
-m, --message <MESSAGE>
SUBCOMMANDS:
apply
help Print this message or the help of the given subcommand(s)
pop
push
$ git stash push -h
git[EXE]-stash-push
USAGE:
git[EXE] stash push [OPTIONS]
OPTIONS:
-h, --help Print help information
-m, --message <MESSAGE>
$ git stash pop -h
git[EXE]-stash-pop
USAGE:
git[EXE] stash pop [STASH]
ARGS:
<STASH>
OPTIONS:
-h, --help Print help information
$ git stash -m "Prototype"
Pushing Some("Prototype")
$ git stash pop
Popping None
$ git stash push -m "Prototype"
Pushing Some("Prototype")
$ git stash pop
Popping None
```
External subcommands:
```console
$ git custom-tool arg1 --foo bar
Calling out to "custom-tool" with ["arg1", "--foo", "bar"]
```