Merge pull request #4476 from IZUMI-Zu/main

uname: move help strings to a markdown file

src/uu/uname/src/uname.rs

@@ -14,12 +14,11 @@ use clap::{crate_version, Arg, ArgAction, Command};
 use platform_info::*;
 use uucore::{
     error::{FromIo, UResult},
-    format_usage,
+    format_usage, help_about, help_usage,
 };
 
-const ABOUT: &str = r#"Print certain system information.
+const ABOUT: &str = help_about!("uname.md");
-With no OPTION, same as -s."#;
+const USAGE: &str = help_usage!("uname.md");
-const USAGE: &str = "{} [OPTION]...";
 
 pub mod options {
     pub static ALL: &str = "all";

src/uu/uname/uname.md

@@ -0,0 +1,8 @@
+# uname
+
+```
+uname [OPTION]...
+```
+
+Print certain system information. 
+With no OPTION, same as -s.