1 /* hello.c - A hello world program. (Simple template for new commands.)
2  *
3  * Copyright 2012 Rob Landley <rob@landley.net>
4  *
5  * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/
6  * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html
7 
8 USE_HELLO(NEWTOY(hello, 0, TOYFLAG_USR|TOYFLAG_BIN))
9 
10 config HELLO
11   bool "hello"
12   default n
13   help
14     usage: hello [-s]
15 
16     A hello world program.  You don't need this.
17 
18     Mostly used as a simple template for adding new commands.
19     Occasionally nice to smoketest kernel booting via "init=/usr/bin/hello".
20 */
21 
22 #define FOR_hello
23 #include "toys.h"
24 
GLOBALS(int unused;)25 GLOBALS(
26   int unused;
27 )
28 
29 void hello_main(void)
30 {
31   xprintf("Hello world\n");
32 
33   // Avoid kernel panic if run as init.
34   if (getpid() == 1) wait(&TT.unused);
35 }
36