Change Prefix permanently on Duplicati Windows installation

tj0xin · July 2, 2021, 11:42am

Hi,

I have made a portable application out of Duplicati windows install and would like to change prefix for backup files (duplicati by default) permanently to e.g (myname) in my portable application so the user would not require setting up the option in Settings / Default Options anymore and that would also be independent of local AppData.

Can someone help, i have been trying to find but no luck!

drwtsn32 · July 2, 2021, 9:34pm

How’d you do that, out of curiosity? If you are forcing the usage of certain parameters (eg, --portable-mode) maybe you can just force the usage of an additional parameter (--prefix).

tj0xin · July 2, 2021, 9:54pm

Hi @drwtsn32,

I am not forcing --portable-mode. In windows, Duplicati stores Default Options settings in %APPDATA% but when my custom Duplicati Installation is shared with someone it wont retain the settings and will be reverted to defaults. I want the prefix to stay permanently the name i set i.e change in its source. But i’m not been able to find where it is located exactly.

Is there an option or a file where i can put the Default / Advance Option in text and that it wont affect the portability?

drwtsn32 · July 2, 2021, 10:06pm

I guess I’m unclear on how you “made a portable application out of Duplicati.” How is your installation “custom” exactly?

ts678 · July 3, 2021, 8:08pm

Maybe this?

github.com

duplicati/duplicati/blob/c0acaeee20609aa0762e2b39ae3f09d343582b1e/Duplicati/Library/Main/Options.cs#L276-L276


      
          new CommandLineArgument("prefix", CommandLineArgument.ArgumentType.String, Strings.Options.PrefixShort, Strings.Options.PrefixLong, "duplicati"),

For CLI, you can probably use parameters-file. For GUI, there is no text file (global or not) that I know of.

You might be able to make use of run-script-before to set up options, but how do all users get to that?

github.com

duplicati/duplicati/blob/c0acaeee20609aa0762e2b39ae3f09d343582b1e/Duplicati/Library/Modules/Builtin/run-script-example.bat#L50-L58


      
          REM ###############################################################################

          REM Changing options from within the script 

          REM ###############################################################################

          

          REM Within a script, all Duplicati options are exposed as environment variables

          REM with the prefix "DUPLICATI__". Please notice that the dash (-) character is

          REM not allowed in environment variable keys, so it is replaced with underscore

          REM (_). For a list of available options, have a look at the output of

          REM "duplicati.commandline.exe help".

Branding and OEM customization might also be of interest, and it gets into updating for custom builds.

ccmgr · July 9, 2021, 11:38am

mis read post

To make Duplicati independent of Local AppData or System App Data set DUPLICATI_HOME environment variable as either User or Computer specific depending on your needs