Git is an example of several common subcommand patterns.
Help:
```console
$ git
? failed
A fictional versioning CLI
Usage: git[EXE] <COMMAND>
Commands:
clone Clones repos
diff Compare two commits
push pushes things
add adds things
stash
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help information
$ git help
A fictional versioning CLI
Usage: git[EXE] <COMMAND>
Commands:
clone Clones repos
diff Compare two commits
push pushes things
add adds things
stash
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help information
$ git help add
adds things
Usage: git[EXE] add <PATH>...
Arguments:
<PATH>... Stuff to add
Options:
-h, --help Print help information
```
A basic argument:
```console
$ git add
? failed
adds things
Usage: git[EXE] add <PATH>...
Arguments:
<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
Usage: git[EXE] stash [OPTIONS]
git[EXE] stash <COMMAND>
Commands:
push
pop
apply
help Print this message or the help of the given subcommand(s)
Options:
-m, --message <MESSAGE>
-h, --help Print help information
$ git stash push -h
Usage: git[EXE] stash push [OPTIONS]
Options:
-m, --message <MESSAGE>
-h, --help Print help information
$ git stash pop -h
Usage: git[EXE] stash pop [STASH]
Arguments:
[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"]
```
Last argument:
```console
$ git diff --help
Compare two commits
Usage: git[EXE] diff [OPTIONS] [COMMIT] [COMMIT] [-- <PATH>]
Arguments:
[COMMIT]
[COMMIT]
[PATH]
Options:
--color[=<WHEN>] [default: auto] [possible values: always, auto, never]
-h, --help Print help information
$ git diff
Diffing stage..worktree (color=auto)
$ git diff ./src
Diffing stage..worktree ./src (color=auto)
$ git diff HEAD ./src
Diffing HEAD..worktree ./src (color=auto)
$ git diff HEAD~~ -- HEAD
Diffing HEAD~~..worktree HEAD (color=auto)
$ git diff --color
Diffing stage..worktree (color=always)
$ git diff --color=never
Diffing stage..worktree (color=never)
```