Plan 9 from Bell Labs’s /usr/web/sources/patch/sorry/sleep-for/sleep.c.orig
#include <u.h> #include <libc.h> void main(int argc, char *argv[]) { long secs; if(argc>1) for(secs = atol(argv[1]); secs > 0; secs--) sleep(1000); exits(0); }