1. 4FIPS
  2. PHOTOS
  3. VIDEOS
  4. CODE
  5. FORUMS
  6. ABOUT

forums.4fips.com

Forums dedicated to the projects hosted at 4FipS.com

Skip to content

Encrypted backups using 'duplicity' on Windows via WSL

> Coding, hacking, photography, and such...

Encrypted backups using 'duplicity' on Windows via WSL

Postby fips on Fri Jul 02, 2021 3:16 pm

Luckily, the Windows Subsystem for Linux (WSL) has made it really simple to use all kinds of Linux command-line tools on Windows. One of such useful tools is an open-source backup package called duplicity. It's robust, feature-rich and can be deployed and used in just a few steps, like shown below:

Given the WSL is already installed, then by typing 'bash' in the Windows Command Prompt (cmd.exe), one can enter the Linux shell, like so:
Code: Select all
C:\Users\john> bash
john@john-pc:/mnt/c/Users/john$

From there, 'duplicity' can be installed, like so:
Code: Select all
sudo apt-get install duplicity

And that's basically it, given the drives are already mounted under '/mnt/', one can backup e.g. 'c:\Users\john\data\' into 'd:\backup_john_data\', simply by typing:
Code: Select all
duplicity /mnt/c/Users/john/data/ file:///mnt/d/backup_john_data/

Which prompts for a passphrase and outputs something like this:
Code: Select all
Local and Remote metadata are synchronized, no sync needed.
Last full backup date: none
GnuPG passphrase:
Retype passphrase to confirm:
No signatures found, switching to full backup.
--------------[ Backup Statistics ]--------------
StartTime 1625233987.10 (Fri Jul  2 15:53:07 2021)
EndTime 1625233987.45 (Fri Jul  2 15:53:07 2021)
ElapsedTime 0.35 (0.35 seconds)
SourceFiles 4
SourceFileSize 8566184 (8.17 MB)
NewFiles 4
NewFileSize 8566184 (8.17 MB)
DeletedFiles 0
ChangedFiles 0
ChangedFileSize 0 (0 bytes)
ChangedDeltaSize 0 (0 bytes)
DeltaEntries 4
RawDeltaSize 8565672 (8.17 MB)
TotalDestinationSizeChange 8587856 (8.19 MB)
Errors 0
-------------------------------------------------

Similarly, restoring the backup from 'c:\backup_john_data\' back to let's say 'c:\Users\john\data_restored\', is just a matter of:
Code: Select all
duplicity restore file:///mnt/d/backup_john_data/ /mnt/c/Users/john/data_restored/

Which verifies the passphrase and outputs:
Code: Select all
Local and Remote metadata are synchronized, no sync needed.
Last full backup date: Fri Jul  2 15:53:00 2021
GnuPG passphrase:

Tip:
The '--volsize' parameter can be used to change the size of the produced backup file chunks (the default value is 25Mb, which might be rather small by modern standards, and produce a lot of files in the backup directory).
Code: Select all
duplicity --volsize 700 /mnt/c/Users/john/data/ file:///mnt/d/backup_john_data/
User avatar
fips
Site Admin
 
Posts: 161
Joined: Wed Nov 12, 2008 9:49 pm
Location: Prague

Encrypted backups using 'duplicity' on Windows via WSL

Sponsor

Sponsor
 

Return to N E W S :: T A L K :: B L O G

Who is online

Users browsing this forum: No registered users and 2 guests

cron