diff --git a/apps/src/sh.c b/apps/src/sh.c
index f06c7814..8545f485 100644
--- a/apps/src/sh.c
+++ b/apps/src/sh.c
@@ -108,6 +108,11 @@ int command_match_builtins(command_t* cmd)
         printf("pid %ld, ppid %ld, uid %d (%s), gid %d\n", getpid(), getppid(), getuid(), username, getgid());
         return 1;
     }
+    if (command_matches(cmd, "sleep"))
+    {
+        sleep(atoi(cmd->buffer + 6));
+        return 1;
+    }
     if (command_matches_exactly(cmd, "clear"))
     {
         fputs("\033@", stdout); // clear screen. for now, escape sequences in luna are non-standard.