(Note: the project is hacky and unreliable) 1. "make" will provide libtimeskew.so 2. Use `TIMESKEW="2 1" LD_PRELOAD=./libtimeskew.so program` to start program with time 2x faster than usual 3. Create/update "timeskew" file in current directory to update time coefficient, e.g. `echo 1 3 > timeskew` - slow down 3x. TIMESHIFT also sets constant time shift License=MIT or (at your option) GPLv3 See also: * Forked timeskew with a GUI (not tested myself): https://github.com/id01/timeskew * https://github.com/wolfcw/libfaketime