Initial commit

src/bin/rusers.rs

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+use clap::Parser;
+
+/// Check who is logged in to machines on local network.
+///
+/// The `rusers` command produces output similar to `who`,
+/// but for the list of hosts or all machines on the local network.
+/// For each host responding to the rusers query,
+/// the host‐name with the names of the users currently logged on is printed on each line.
+/// The `rusers` command will wait for one minute to catch late responders.
+#[derive(Debug, Parser)]
+pub struct Args {
+    /// Print all machines responding even if no one is currently logged in
+    #[arg(long, short)]
+    all: bool,
+
+    /// Print a long format listing.
+    /// This includes:
+    ///   - the user name
+    ///   - the host name
+    ///   - the tty that the user is logged in to
+    ///   - the date and time the user logged in
+    ///   - the amount of time since the user typed on the keyboard
+    ///   - the remote host they logged in from (if applicable)
+    #[arg(long, short)]
+    long: bool,
+
+    /// Output in JSON format
+    #[arg(long, short)]
+    json: bool,
+}
+
+fn main() {
+    let _args = Args::parse();
+    unimplemented!()
+}