Operating system functions.
System.os.posix
: Common POSIX functions and constants.args
: Arguments passed in from the shell.dylib_extension
: The dynamic library extension on this system.chdir(newcwd, )
: Changes the current working directory.chmod(name, permission, )
: Changes permissions for a file or directory.envGet(var, )
: Retrieve contents of environment variable.envSet(var, val, )
: Set contents of environment variable to given value.fork()
: Forks off a new process.getcwd()
: Gets the current working directory.mkdir(name, )
: Creates a new directory.rmdir(name, )
: Removes a directory.system(cmd, )
: Executes system command.