umm this is kinda tongue-in-cheek ``` #include <time.h> #include <stdio.h> int main(int argc, char argv[]) { int i = 0; time_t timep;

umm this is kinda tongue-in-cheek ``` #include <time.h> #include <stdio.h> int main(int argc, char argv[]) { int i = 0; time_t timep; /* * ok so now we are printing something **/ printf("Greetings!\n"); /* * this is a for loop from 0..9 **/ for(i=0; i<10; i++) { time(&timep); localtime(&timep); } printf("Godspeed, dear friend!\n"); return 0; } ``` now, the canonical ``` $> gcc tz-test.c -o obj/tz-test ``` now do this ``` $> unset TZ $> strace -ff ./obj/tz-test 2>&1 | grep 'local' | wc 10 77 851 $> export TZ=:/etc/localtime $> strace -ff ./obj/tz-test 2>&1 | grep 'local' | wc 1 5 59 ``` moral, always set TZ to avoid localtime(3) from stat'ing /etc/localtime :o)