Proxmox Backup Client

Installation

Until now (2023-06-27) you have to use the pvetest repository. (Ref: 1, 2)

Add public key:

sudo wget http://download.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg

Add repository:

sudo nano /etc/apt/sources.list.d/proxmox.list

With following content:

deb http://download.proxmox.com/debian/pve bookworm pvetest

After that, update apt:

sudo apt update

Now you can install proxmox-backup-client with:

sudo apt install proxmox-backup-client