installed FreeFileSync Donation Edition on a ​​headless Linux server​​ but encountered two key issues:

Get help for specific problems
Posts: 3
Joined: 2 Jun 2025

zhang

​​Missing ffs_batch CLI tool​​:
The /opt/FreeFileSync/Bin/ directory only contains GUI binaries (FreeFileSync_x86_64, RealTimeSync_x86_64), despite the installer registering .ffs_batch file extensions.
Attempts to run FreeFileSync_x86_64 in batch mode (-b) fail with Unable to initialize GTK+ (GUI dependency error).

How to validate the .key license on a server without GUI?

Installed via .run file (logged as successful but no CLI tools).
Attempted workarounds with Xvfb (virtual X11) and rsync.
Attachments
Snipaste_2025-06-02_11-14-23.png
Snipaste_2025-06-02_11-14-23.png (6.08 KiB) Viewed 261 times
Snipaste_2025-06-02_11-12-36.png
Snipaste_2025-06-02_11-12-36.png (4.05 KiB) Viewed 262 times
User avatar
Posts: 4866
Joined: 11 Jun 2019

xCSxXenon

FFS doesn't have a separate CLI executable
Posts: 3
Joined: 2 Jun 2025

zhang

How can I use FreeFileSync on a Linux server without a graphical interface
Posts: 3
Joined: 2 Jun 2025

zhang

How can I use FreeFileSync on a Linux server without a graphical interface xCSxXenon, 04 Jun 2025, 20:09
User avatar
Posts: 4866
Joined: 11 Jun 2019

xCSxXenon

https://freefilesync.org/manual.php?topic=command-line
I use Windows, so I can't confirm if these work on Linux.