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#! /usr/bin/env lua
local M = require 'posix.unistd'
print ('parent: my pid is: ' .. M.getpid())
local childpid, errmsg = M.fork ()
if childpid == nil then
print('parent: The fork failed: ' .. errmsg)
elseif childpid == 0 then
print('child: Hello World! I am pid: ' .. M.getpid())
print("child: I'll sleep for 1 second ... ")
M.sleep(1)
print('child: Good bye');
else
print("parent: While the child sleeps, I'm still running.")
print('parent: waiting for child (pid:' .. childpid .. ') to die...')
require 'posix.sys.wait'.wait(childpid)
print("parent: child died, but I'm still alive.")
print('parent: Good bye')
end
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