ref: 8ac89d66a50b7718ab4cefca9e3dad64af58d3d2
dir: /sys/src/cmd/date.c/
#include <u.h> #include <libc.h> int uflg, nflg; void main(int argc, char *argv[]) { ulong now; ARGBEGIN{ case 'n': nflg = 1; break; case 'u': uflg = 1; break; default: fprint(2, "usage: date [-un] [seconds]\n"); exits("usage"); }ARGEND if(argc == 1) now = strtoul(*argv, 0, 0); else now = time(0); if(nflg) print("%ld\n", now); else if(uflg) print("%s", asctime(gmtime(now))); else print("%s", ctime(now)); exits(0); }