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use clap::Command;
fn main() {
let cmd = Command::new(env!("CARGO_CRATE_NAME"))
.multicall(true)
.arg_required_else_help(true)
.subcommand_value_name("APPLET")
.subcommand_help_heading("APPLETS")
.subcommand(Command::new("hostname").about("show hostname part of FQDN"))
.subcommand(Command::new("dnsdomainname").about("show domain name part of FQDN"));
match cmd.get_matches().subcommand_name() {
Some("hostname") => println!("www"),
Some("dnsdomainname") => println!("example.com"),
_ => unreachable!("parser should ensure only valid subcommand names are used"),
}
}