"ex" API implementation http://lua-users.org/wiki/ExtensionProposal Copyright 2007 Mark Edgar < medgar at gmail com > -- Environment os.getenv(name) -- get environment variable os.setenv(name, value) -- set/unset environment variable os.environ() -- returns a copy of the environment -- File system cwd = os.currentdir() os.chdir(pathname) os.mkdir(pathname) os.remove(pathname) for entry in os.dir(pathname) do ; end entry = os.dirent(pathname) --[[ entry is a table, containing at least the following keys: name: the filename type: "file" or "directory" or another implementation-defined string size: the file size in bytes --]] -- Locking and pipes file = io.open("filename", "w") file:lock(mode, start, length) -- mode is "r" or "w", start and length are optional file:unlock(start, length) -- start and length are optional in, out = io.pipe() -- Process control os.sleep(seconds) -- sleep for (floating-point) seconds os.sleep(interval, unit) -- sleep for interval/unit seconds pid = os.spawn(filename, {args={}, env={}, stdin=file, stdout=file, stderr=file}) exitcode = pid:wait(pid)