 
CVS (1992)
- Advantages: Build atop RCS, simple set of shell scripts
- Disadvantages:
Can't manage directory can't rename committing might break in-between tagging takes one day and one night requires network all the time you hate it and then it hates back #@($&)!
cvs/src/server.c:
  5878         goto i_hate_you;
  ...
  5898     i_hate_you:
  5899         printf ("I HATE YOU\n");
  5900         fflush (stdout);
continued...