Tool to cleanup backup directory with daily, weekly and monthly backups. This tool removes everything in the specified directory (not recursively) except files, containing timestamps in the filename that can identified by this tool as fresh backups.

By default, this tool keeps last 7 daily backups, 4 weekly backups (4 last monday backups) and 3 monthly backups (1st day of last 3 months). You can redefine this by command line parameters.

This tool expects timestamps like this: 20220531 (May 31, 2022), but of course, you can redefine this.

usage: clean-backups.py [-h] [-d N] [-w N] [-m N] [-f] PATH

Cleanup old backups

positional arguments:
  PATH               directory path

optional arguments:
  -h, --help         show this help message and exit
  -d N, --daily N    keep N daily backups, default: 7
  -w N, --weekly N   keep N weekly backups, default: 4
  -m N, --monthly N  keep N monthly backups, default: 3
  -f, --force        suppress remove confirmation
  -t FORMAT, --timestamp-format FORMAT
                     format of timestamp, default: %Y%m%d

For a complete timestamp format description, see the python strftime() documentation: https://docs.python.org/3/library/datetime.html#strftime-strptime-behavior