Comet Backup install scripts

Install scripts for the Comet Backup client on Linux, macOS, and Windows. Each script downloads the correct installer from your Comet Server, installs the client, and logs it in either via remote registration (lobby) or with a username and password.

Contents

Platform	Script	Shell
Linux (Debian/Ubuntu, RHEL/Fedora/CentOS, generic)	linux/install.sh	bash
macOS (Intel and Apple Silicon)	macos/install.sh	bash
Windows	windows/install.ps1	PowerShell 3.0+

All scripts require administrative privileges and network access to the Comet Server. The product name and installer are fetched from the server's branding, so rebranded clients install under their custom name.

Authentication modes

Every script supports two ways to authenticate the client after install:

• Remote registration (lobby) — the default. Only the server URL is required. The device shows up in the Comet Server's lobby, where an administrator adds it to a user account.
• Direct login — set both a username and password. The client is signed in immediately as that user.

Linux

# Remote registration (lobby)
sudo SERVER_URL=https://cometserver.com ./linux/install.sh

# Direct login
sudo SERVER_URL=https://cometserver.com \
     USERNAME=user-test \
     PASSWORD=password \
     ./linux/install.sh

Environment variables:

Name	Required	Description
SERVER_URL	yes	Full URL of the Comet Server, e.g. https://backup.example.com
USERNAME	no	Comet user for direct login. Must be set together with PASSWORD.
PASSWORD	no	Password for direct login. Must be set together with USERNAME.

The script detects the distribution from /etc/os-release (with fallbacks to /etc/debian_version, /etc/redhat-release, dpkg, and rpm) and downloads a .deb, .rpm, or generic .run installer as appropriate. curl is used if available, otherwise wget.

macOS

# Remote registration (lobby)
sudo BACKUP_SERVER_URL=https://cometserver.com ./macos/install.sh

# Direct login
sudo BACKUP_SERVER_URL=https://cometserver.com \
     BACKUP_USERNAME=user-test \
     BACKUP_PASSWORD=password \
     ./macos/install.sh

Environment variables:

Name	Required	Description
BACKUP_SERVER_URL	yes	Full URL of the Comet Server
BACKUP_USERNAME	no	Comet user for direct login. Must be set together with BACKUP_PASSWORD.
BACKUP_PASSWORD	no	Password for direct login. Must be set together with BACKUP_USERNAME.

The correct installer for Apple Silicon (arm64) or Intel (x86_64) is selected automatically.

Windows

Run PowerShell as Administrator:

# Remote registration (lobby)
$env:BACKUP_SERVER_URL = "https://cometserver.com"
powershell -ExecutionPolicy Bypass -File .\windows\install.ps1

# Direct login
$env:BACKUP_SERVER_URL = "https://cometserver.com"
$env:BACKUP_USERNAME   = "user-test"
$env:BACKUP_PASSWORD   = "password"
powershell -ExecutionPolicy Bypass -File .\windows\install.ps1

Environment variables:

Name	Required	Description
BACKUP_SERVER_URL	yes	Full URL of the Comet Server, including scheme and any non-default port (e.g. https://backup.example.com:8060)
BACKUP_USERNAME	no	Comet user for direct login. Must be set together with BACKUP_PASSWORD.
BACKUP_PASSWORD	no	Password for direct login. Must be set together with BACKUP_USERNAME.
BACKUP_EXE	no	Set to true to use the EXE installer. Defaults to the MSI installer.

Requires PowerShell 3.0+ and .NET Framework 4.5+ for TLS 1.2 support. If the installer download fails with a trust relationship error, install the server's CA certificate into the machine's Trusted Root Certification Authorities store.

Notes

• The scripts are idempotent for already-installed and already-logged-in clients: if the client is present and authenticated, they exit without reinstalling.
• Downloaded installers are removed on exit, including on failure.
• Product names must contain only alphanumeric characters, spaces, periods, underscores, and hyphens. Rebranded clients using other characters will be rejected.