clap/examples/pacman.md
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Markdown

*Jump to [source](pacman.rs)*
[`pacman`](https://wiki.archlinux.org/index.php/pacman) defines subcommands via flags.
Here, `-S` is a short flag subcommand:
```console
$ pacman -S package
Installing package...
```
Here `--sync` is a long flag subcommand:
```console
$ pacman --sync package
Installing package...
```
Now the short flag subcommand (`-S`) with a long flag:
```console
$ pacman -S --search name
Searching for name...
```
And the various forms of short flags that work:
```console
$ pacman -S -s name
Searching for name...
$ pacman -Ss name
Searching for name...
```
*(users can "stack" short subcommands with short flags or with other short flag subcommands)*
**NOTE:** Keep in mind that subcommands, flags, and long flags are *case sensitive*: `-Q` and `-q` are different flags/subcommands. For example, you can have both `-Q` subcommand and `-q` flag, and they will be properly disambiguated.
Let's make a quick program to illustrate.