# 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 <repo-url>
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