uname: implement uname

Implements non-standard domainname option `--domainname`/`-d`.

Author: leecannon

README.md

@@ -20,6 +20,7 @@ Any tools not in GNU coreutils are acceptable as well.
  * nprocs
  * touch
  * true
+ * uname
  * whoami
  * yes
 
@@ -119,7 +120,6 @@ Any tools not in GNU coreutils are acceptable as well.
  * truncate
  * tsort
  * tty
- * uname
  * unexpand
  * uniq
  * unlink

src/commands/listing.zig

@@ -11,6 +11,7 @@ pub const commands: []const type = &.{
     @import("nproc.zig"),
     @import("touch.zig"),
     @import("true.zig"),
+    @import("uname.zig"),
     @import("whoami.zig"),
     @import("yes.zig"),
 };