usage(void)
{
fprintf(stderr, "%s\n%s\n",
"usage: truss [-cfaedDS] [-o file] [-s strsize] -p pid",
"usage: truss [-cfaedDHS] [-o file] [-s strsize] -p pid",
" truss [-cfaedDS] [-o file] [-s strsize] command [args]");
" truss [-cfaedDHS] [-o file] [-s strsize] command [args]");
exit(1);
}