Update Manager

Lightweight SSH-based update manager for Linux systems.

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Features

• Check for updates across multiple hosts
• SSH-based (no agents)
• Simple host inventory
• No external dependencies

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Installation

git clone cd update-manager chmod +x update-manager.sh ./update-manager.sh install

This will:

• Install the tool in /opt/update-manager
• Create global command: update-manager
• Create config files if missing

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Configuration

Edit hosts:

nano /opt/update-manager/hosts.conf

Format:

name ip ssh_user

Example:

server1 192.168.1.10 user server2 192.168.1.20 user

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SSH (required)

Passwordless SSH must be configured.

ssh-keygen -t ed25519 ssh-copy-id user@192.168.1.10

Repeat for all hosts.

Test:

ssh user@192.168.1.10

Should work without password.

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Usage

update-manager check

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Output

server1 🔴 2 updates server2 🟢 up-to-date server3 ❌ connection failed

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Config

/etc/update-manager.conf

Default:

HOSTS_FILE="/opt/update-manager/hosts.conf" SSH_OPTIONS="-o BatchMode=yes -o ConnectTimeout=5"

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Notes

• hosts.conf and update-manager.conf are local files (not in Git)
• .example files are templates
• Existing config is not overwritten on reinstall

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Roadmap

• update command
• parallel execution
• scheduled checks
• logging integration

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Philosophy

Keep it simple.

• No agents
• No dependencies
• Just SSH