Check how much you work on weekends.
Script assumes that Monday-Friday are working days and Saturday + Sunday are weekend. We look for a day with any commit activity. Number of commits is ignored. It is up to us to interpret the results.
$ sabbath.py -h
$ git log --date=short | grep "^Date:" | sabbath.py -s -c
$ git log --date=short --since="2013-01-01" | grep "^Date:" | sabbath.py -s
$ git log --date=short --author=Erkal | grep "^Date:" | sabbath.py -5
$ echo $?