Add move command

src/user/mod.rs

@@ -1,5 +1,6 @@
 pub mod date;
 pub mod read;
+pub mod r#move;
 pub mod shell;
 pub mod uptime;
 pub mod write;

src/user/move.rs

@@ -0,0 +1,25 @@
+use crate::print;
+use crate::kernel::fs;
+
+pub fn main(args: &[&str]) {
+    if args.len() != 3 {
+        return;
+    }
+
+    let from = args[1];
+    let to = args[2];
+
+    if to.starts_with("/dev") || to.starts_with("/sys") {
+        print!("Permission denied to write to '{}'\n", to);
+    } else {
+        if let Some(file_from) = fs::File::open(from) {
+            if let Some(mut file_to) = fs::File::create(to) {
+                file_to.write(&file_from.read());
+            } else {
+                print!("Permission denied to write to '{}'\n", to);
+            }
+        } else {
+            print!("File not found '{}'\n", from);
+        }
+    }
+}

src/user/shell.rs

@@ -59,7 +59,7 @@ pub fn key_handle(key: DecodedKey) {
                     "j" | "jd" | "jump" | "jump-dir"    => print!("TODO\n"),
                     "k" | "kill"                        => print!("TODO\n"),
                     "l" | "list" | "ls"                 => print!("TODO\n"), // same as `rd`
-                    "m" | "move" | "mv"                 => print!("TODO\n"),
+                    "m" | "move" | "mv"                 => user::r#move::main(&args),
                     "n"                                 => print!("?\n"),
                     "o"                                 => print!("?\n"),
                     "p" | "print"                       => print!("TODO\n"),