hashbackup

The script is designed to generate sha1 checksums for every file in the source directory, to make a backups from this directory to another one and compare these checksums later.

Usage

The script has two parts - generator and backupper.

Generator

usage: hashgen.py [-h] [-g | -n] [-c] [-q] [-l LOG] source

positional arguments:

• source

optional arguments:

• -g = Generate .sha1 for source (-g OR -n key)
• -n = Generate .sha1 only for new files. Default key
• -c = Clear .sha1 orphans (Files that left without their master).
• -q = Quiet mode, no output
• -l LOG = Write output to log file

Backupper

usage: hashbackup.py [-h] [-a | -s] [-d] [-q] [-l LOG] source destination

positional arguments:
source
destination

optional arguments:

• -a = Copy new files only. Default key
• -s = Copy new and changed files (-a OR -s key)
• -d = Delete old files in destination (Backups of files you had in source folder and don’t have now)
• -q = Quiet mode
• -l LOG = Write output to log file

How to use it.

Let’s say you have two folders - C:\A (source) and C:\B (destination).
First generate sha1 checksums. All files are new this time, so no need to use -g or -n key now.

python hashgen.py C:\A

And backup this whole bunch to second folder.

python hashbackup.py C:\A C:\B

Now let’s say you changed some files in source, deleted, added some files and you need a log-file in C:\123.
Since the files have changed, use -g key for hashgen, -c for clearing single .sha1 files and -l for log.

python hashgen.py -g -c -l C:\123\log.txt C:\A

And backup this bunch to second folder again, but now with -s (because we have not only new but changed files too, and we need to check all checksums), -d (only if you don’t need backups of deleted source files) and -l keys for log.

python hashbackup.py -s -d -l C:\123\log.txt C:\A C:\B

And so on.