libyesterday Captures gettimeofday(), time() and clock_gettime() to simulate yesterday's date Usage examples: # load date program with day set to yesterday LD_PRELOAD=/path/to/libyesterday.so /bin/date # load date program with day set to a week ago LIBYESTERDAY=$((3600*24*7)) LD_PRELOAD=/path/to/libyesterday.so /bin/date Author: Dario Rodriguez antartica@whereismybit.com This program is licensed under the terms of the MIT/X license.