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clap/examples/pacman.md
Ed Page befee6667b docs: Re-work examples 
This creates distinct tutorial examples from complex feature examples
(more how-tos).  Both sets are getting builder / derive versions (at
least the critical ones).
2021-11-30 21:33:52 -06:00

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pacman defines subcommands via flags.

Here, -S is a short flag subcommand:

$ pacman -S package
Installing package...

Here --sync is a long flag subcommand:

$ pacman --sync package
Installing package...

Now the short flag subcommand (-S) with a long flag:

$ pacman -S --search name
Searching for name...

And the various forms of short flags that work:

$ 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.