snapbak is a very simple tarsnap frontend. Main features:
- No config file needed; completely driven by command line
- Do hourly, daily, weekly, monthly backup with N sets per type
- Deletes older archives (older than N sets)
- Python 2.7.x (on any supported platform)
- Tested on:
- Debian Linux amd64 (testing, unstable)
- OpenBSD 5.7, 5.8 - amd64, i386
- OS X Mavericks, OS X Yosemite
snapbak script to your preferred location in
$PATH. I put
snapbak Keyfile Archive hourly|daily|weekly|monthly [Max-Sets] Dir [Dir ...]
Keyfile Tarsnap keyfile Archive The tarsnap archive prefix type Backup type; one of 'hourly', 'daily', 'weekly' or 'monthly' Dir One or more directories to backup Max-Sets An integer argument denoting the maximum number of previous backups to retain.
Max-Sets is not provided, the program uses the following
- Hourly: 24
- Daily: 10
- Weekly: 6
- Monthly: 14
If you have a directory name that can be interpreted as an integer and thus confused for "Max-Sets", you can disambiguate by providing a valid "Max-Sets" value or "-" if you want to use the program supplied defaults.
-h, --help show this help message and exit -n, --dry-run Do a dry-run, don't actually commit things [False] -v, --verbose Show verbose progress messages [False] -c D, --cachedir D Use 'D' as the tarsnap cache dir  -V Show version information and quit
The archive name in the tarsnap cloud is derived as
Archiveis the archive name prefix from the command line
Typeis the backup type (daily, weekly etc.)
Tstampis the current date, time in the format YYYY-MMM-DD-hh-mm; where: YYYY: four digit year, MMM: short month name, DD: two digit date, hh: two digit hour in 24 hour format, mm: two digit minute.
Backup dirA, dirB identified by 'work' and keep last 7 days worth of daily backups:
snapbak /path/to/Keyfile.key work daily 7 dirA dirB
Backup directories 10, 20 identified by
photosand keep last 10 weeks worth of weekly backups:
snapbak /path/to/Keyfile.key photos weekly 10 10 20
In the above example, the first
10is the number of backup sets and the second 10 is the directory name.
Do a monthly backup of directories 10, 20 identified by the prefix
fooand use the program defaults for number of retained backups:
snapbak /path/to/Keyfile.key foo monthly - 10 20
- How do I know which archives are stored in the cloud?
tarsnap --keyfile /path/to/Keyfile.key --list-archives
- Why do you need to do hourly backups?
I don't know. But if you do,
- How many daily, weekly and monthly sets do I need to keep?
It depends on your needs. I use the following:
- 10 daily backups
- 6 weekly backups
- 14 monthly backups
And no, I don't use hourly backups.