From 64971229f349a50ad58feb40cd374d016eae7bb0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Georges=20Dup=C3=A9ron?= <georges.duperon@gmail.com>
Date: Tue, 3 Jul 2018 17:20:24 +0200
Subject: [PATCH] Made the os.sh a chameleon: it is now an x86 bootsector and a
 shell script at the same time.

---
 example-os/os.asm | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/example-os/os.asm b/example-os/os.asm
index 520ed2a..e69cebf 100644
--- a/example-os/os.asm
+++ b/example-os/os.asm
@@ -1,6 +1,11 @@
 [BITS 16]
 [ORG 0x7c00]
 
+db `#!/usr/bin/env sh\n`
+db `: <<'EOF'\n`
+
+times 0x7c78-0x7c00-($-$$) db 0
+        
 ;; Switch to 320x200x256 VGA mode
 mov ax, 0x0013
 int 10h
@@ -41,5 +46,11 @@ times 512-2-($-$$) db 0
 db 0x55
 db 0xaa
 
+;; end of the bootsector, close the sh here-document skipped via : <<'EOF'
+db `\n`
+db `EOF\n`
+db `echo Hello world from sh!\n`
+db `exit\n`
+
 ;; Fill up to 1.44M with 0
 times (1440*1024)-($-$$) db 0