Re: [rdiff-backup-users] Limit ssh commands to rdiff-backup

[Jakob Unterwurzacher]

Steve Annessa schrieb:
> Hello,
>
> I'm trying to limit the commands ssh runs to rdiff-backup.
>
> I added the commands option to my authorized_key file, and it literally 
> runs the command listed. Has anyone successfully limited ssh commands 
> this way with rdiff-backup? What am I doing wrong? Is it just not possible?
>
> I push from Server_N to Server_Backup. It goes from address@hidden to 
> address@hidden
>
> Thank you, 
>
> -- Steve

Hi Steve!

What you put into command="..." will be run at login instead of anything 
the ssh-client may have wanted to run.
You need to know what rdiff-backup would have done and put that into 
command="...".

I'd do it like this:
1. Delete the command= section from your authorized_keys
2. Start a backup
3. Run
ps ax|less
on Server_Backup and extract the *exact* rdiff-backup command, including 
arguments. Note that the |less is necessary, ps would crop the output at 
the screen edge otherwise.
4. Put the command into your command="...." in your authorized_keys
5. Post the command for further reference ;)

Jakob