Properly name IPng Networks

.gitignore

@@ -4,8 +4,8 @@ ipng-router-backup
 debian/.debhelper/
 debian/.gocache/
 debian/go/
+debian/files
 debian/ipng-router-backup/
 debian/*.substvars
 debian/debhelper-build-stamp
 debian/*.debhelper
-

LICENSE

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
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+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+
+   Copyright 2025, IPng Networks GmbH, Pim van Pelt <pim@ipng.ch>
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
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+   limitations under the License.

Makefile

@@ -10,9 +10,17 @@ GO_FILES=$(SOURCE_DIR)/main.go
 .PHONY: all
 all: build
 
+# Sync version from debian/changelog to Go source
+.PHONY: sync-version
+sync-version:
+	@echo "Syncing version from debian/changelog..."
+	@VERSION=$$(head -1 debian/changelog | sed 's/.*(\([^)]*\)).*/\1/'); \
+	sed -i "s/const Version = \".*\"/const Version = \"$$VERSION\"/" $(SOURCE_DIR)/main.go; \
+	echo "Version synced: $$VERSION"
+
 # Build the Go binary
 .PHONY: build
-build:
+build: sync-version
 	@echo "Building $(BINARY_NAME)..."
 	cd $(SOURCE_DIR) && go build -o ../$(BUILD_DIR)/$(BINARY_NAME) main.go
 	@echo "Build complete: $(BINARY_NAME)"
@@ -21,14 +29,15 @@ build:
 .PHONY: clean
 clean:
 	@echo "Cleaning build artifacts..."
+	rm -rf debian/.debhelper debian/.gocache debian/go debian/$(BINARY_NAME) debian/files debian/*.substvars debian/debhelper-build-stamp
+	rm -f ../$(BINARY_NAME)_*.deb ../$(BINARY_NAME)_*.changes ../$(BINARY_NAME)_*.buildinfo
 	rm -f $(BUILD_DIR)/$(BINARY_NAME)
-	@echo "Clean complete"
 
 # Run tests
 .PHONY: test
 test:
 	@echo "Running tests..."
-	cd $(SOURCE_DIR) && go test ./...
+	cd $(SOURCE_DIR) && go test -v .
 
 # Format Go code
 .PHONY: fmt
@@ -38,24 +47,17 @@ fmt:
 
 # Build Debian package
 .PHONY: pkg-deb
-pkg-deb:
+pkg-deb: sync-version build
 	fakeroot dpkg-buildpackage -us -uc -b
 
-# Clean package artifacts
-.PHONY: clean-pkg
-clean-pkg:
-	@echo "Cleaning package artifacts..."
-	@rm -f *.deb
-	@echo "Package cleanup complete"
-
 # Show help
 .PHONY: help
 help:
 	@echo "Available targets:"
-	@echo "  build     - Build the router_backup binary"
+	@echo "  build        - Build the router_backup binary"
-	@echo "  clean     - Remove build artifacts"
+	@echo "  clean        - Remove build artifacts"
-	@echo "  test      - Run tests"
+	@echo "  test         - Run tests"
-	@echo "  fmt       - Format Go code"
+	@echo "  fmt          - Format Go code"
-	@echo "  pkg-deb   - Create Debian package"
+	@echo "  sync-version - Sync version from debian/changelog to Go source"
-	@echo "  clean-pkg - Remove package artifacts"
+	@echo "  pkg-deb      - Create Debian package"
-	@echo "  help      - Show this help message"
+	@echo "  help         - Show this help message"

README.md

@@ -0,0 +1,81 @@
+# IPng Networks Router Backup
+
+SSH-based network device configuration backup tool with support for multiple device types and flexible authentication methods.
+
+## Features
+
+- **Multi-device backup**: Configure multiple routers in YAML
+- **Device type templates**: Reusable command sets per device type
+- **Flexible authentication**: SSH agent, key files, or password
+- **Selective execution**: Backup specific devices with `--host` flags
+- **Professional CLI**: Standard flags, version info, and help
+
+## Quick Start
+
+### Installation
+
+```bash
+# Install Debian package
+sudo dpkg -i ipng-router-backup_X.Y.Z_amd64.deb
+
+# Or build from source
+make build
+```
+
+### Basic Usage
+
+1. **Create configuration file** (`config.yaml`):
+
+```yaml
+types:
+  srlinux:
+    commands:
+      - show version
+      - show platform linecard
+      - info flat from running
+
+devices:
+  asw100:
+    user: admin
+    type: srlinux
+  asw120:
+    user: admin  
+    type: srlinux
+```
+
+2. **Run backup**:
+
+```bash
+# Backup all devices
+ipng-router-backup --config config.yaml --output-dir /backup
+
+# Backup specific devices
+ipng-router-backup --config config.yaml --host asw100 --output-dir /backup
+```
+
+3. **Check output**:
+
+```bash
+ls /backup/
+# asw100  asw120
+
+cat /backup/asw100
+# ## COMMAND: show version
+# Hostname             : asw100
+# Software Version     : v25.3.2
+# ...
+```
+
+## Authentication
+
+The tool automatically tries authentication methods in this order:
+
+1. **SSH Agent** (if `SSH_AUTH_SOCK` is set)
+2. **SSH Key File** (`--key-file` or default locations)
+3. **Password** (`--password` flag)
+
+## Documentation
+
+- **[Detailed Documentation](docs/DETAILS.md)** - Complete feature guide, configuration reference, and examples
+- **[Manual Page](docs/router_backup.1)** - Unix manual page
+- **[Changelog](debian/changelog)** - Version history and changes

debian/changelog

@@ -1,3 +1,14 @@
+ipng-router-backup (1.0.1) stable; urgency=low
+
+  * Add version information to help output
+  * Add --version/-v flag support
+  * Add --host flag for selective device processing
+  * Add version sync between Debian package and binary
+  * Remove .txt suffix from output files
+  * Rename binary to ipng-router-backup
+
+ -- Pim van Pelt <pim@ipng.ch>  Sun, 06 Jul 2025 10:45:00 +0100
+
 ipng-router-backup (1.0.0) stable; urgency=low
 
   * Initial release
@@ -7,4 +18,4 @@ ipng-router-backup (1.0.0) stable; urgency=low
   * Command output concatenation with headers
   * Go implementation for better performance
 
- -- Pim van Pelt <pim@ipng.ch>  Sat, 05 Jul 2025 23:55:00 +0100
+ -- Pim van Pelt <pim@ipng.ch>  Sat, 05 Jul 2025 23:55:00 +0100

debian/debhelper-build-stamp

@@ -1 +0,0 @@
-ipng-router-backup

debian/files

@@ -1,2 +0,0 @@
-ipng-router-backup_1.0.0_amd64.buildinfo net optional
-ipng-router-backup_1.0.0_amd64.deb net optional

debian/postinst

@@ -1,3 +1,3 @@
 #!/bin/bash
-echo 'IPNG Router Backup installed successfully.'
+echo 'IPng Networks Router Backup installed successfully.'
 echo 'Example config at /etc/ipng-router-backup/config.yaml.example'

docs/DETAILS.md

@@ -0,0 +1,358 @@
+# IPng Networks Router Backup - Detailed Documentation
+
+## Overview
+
+IPng Networks Router Backup is a SSH-based network device configuration backup tool written in Go. It connects to multiple network devices defined in a YAML configuration file, executes commands via SSH, and saves the output to local files.
+
+## Key Features
+
+- **Multi-device support**: Backup multiple routers in a single run
+- **Device type templates**: Define command sets per device type
+- **Flexible authentication**: SSH agent, key files, or password authentication
+- **Selective execution**: Target specific devices with `--host` flags
+- **Automatic file organization**: Output files named by hostname
+- **Command identification**: Each command output prefixed with command name
+- **Version synchronization**: Automatic version sync between package and binary
+
+## Configuration File Format
+
+The tool uses a YAML configuration file with two main sections: `types` and `devices`.
+
+### Complete Example
+
+```yaml
+types:
+  srlinux:
+    commands:
+      - show version
+      - show platform linecard
+      - show platform fan-tray
+      - show platform power-supply
+      - info flat from running
+  
+  eos:
+    commands:
+      - show version
+      - show inventory
+      - show env power
+      - show running-config
+  
+  centec:
+    commands:
+      - show version | exc uptime
+      - show boot images
+      - show transceiver
+      - show running-config
+
+devices:
+  asw100:
+    user: admin
+    type: srlinux
+  
+  asw120:
+    user: netops
+    type: srlinux
+  
+  core-01:
+    user: admin
+    type: eos
+  
+  edge-router:
+    user: operator
+    commands:
+      - show version
+      - show ip route summary
+```
+
+### Configuration Fields
+
+#### Types Section
+
+**`types`**: Define reusable command sets for different device types.
+
+- **`<type-name>`**: Arbitrary name for the device type (e.g., `srlinux`, `eos`)
+  - **`commands`**: Array of CLI commands to execute on devices of this type
+
+#### Devices Section
+
+**`devices`**: Define individual network devices to backup.
+
+- **`<hostname>`**: Device hostname or IP address
+  - **`user`** (required): SSH username for authentication
+  - **`type`** (optional): Reference to a type definition for commands
+  - **`commands`** (optional): Direct command list (overrides type commands)
+
+### Configuration Validation
+
+- Each device must have a `user` field
+- Each device must have either a `type` field (referencing a valid type) or a `commands` field
+- Type references must exist in the `types` section
+- Commands can be specified either via type reference or directly per device
+
+## Command Line Flags
+
+### Required Flags
+
+- **`--config`**: Path to YAML configuration file
+
+### Optional Flags
+
+- **`--output-dir`**: Output directory for backup files (default: `/tmp`)
+- **`--host`**: Specific hostname(s) to process (can be repeated)
+- **`--password`**: SSH password for authentication
+- **`--key-file`**: Path to SSH private key file
+- **`--port`**: SSH port number (default: `22`)
+- **`--help`**: Show help information
+- **`--version`**: Show version information
+
+### Flag Examples
+
+```bash
+# Basic usage - all devices
+ipng-router-backup --config /etc/network-backup/config.yaml
+
+# Custom output directory
+ipng-router-backup --config config.yaml --output-dir /backup/network
+
+# Specific devices only
+ipng-router-backup --config config.yaml --host asw100 --host core-01
+
+# Multiple specific devices
+ipng-router-backup --config config.yaml --host asw100 --host asw120 --host core-01
+
+# Custom SSH port
+ipng-router-backup --config config.yaml --port 2222
+
+# Using password authentication
+ipng-router-backup --config config.yaml --password mypassword
+
+# Using specific SSH key
+ipng-router-backup --config config.yaml --key-file ~/.ssh/network_key
+```
+
+## SSH Authentication Methods
+
+The tool supports multiple SSH authentication methods in the following priority order:
+
+### 1. SSH Agent (Highest Priority)
+
+Automatically used when the `SSH_AUTH_SOCK` environment variable is set.
+
+```bash
+# Start SSH agent and add keys
+eval "$(ssh-agent -s)"
+ssh-add ~/.ssh/id_rsa
+
+# Run backup (will use SSH agent automatically)
+ipng-router-backup --config config.yaml
+```
+
+**Advantages:**
+- Most secure (keys remain in memory)
+- No password prompts
+- Works with hardware security modules
+- Single sign-on experience
+
+### 2. SSH Key File
+
+Specify a private key file with `--key-file` or use default locations.
+
+```bash
+# Explicit key file
+ipng-router-backup --config config.yaml --key-file ~/.ssh/network_key
+
+# Tool automatically checks these default locations:
+# ~/.ssh/id_rsa
+# ~/.ssh/id_ed25519  
+# ~/.ssh/id_ecdsa
+```
+
+**Key File Requirements:**
+- Must be in OpenSSH format
+- Proper permissions (600 recommended)
+- Corresponding public key must be on target devices
+
+### 3. Password Authentication (Lowest Priority)
+
+Use `--password` flag for password-based authentication.
+
+```bash
+# Command line password (not recommended for scripts)
+ipng-router-backup --config config.yaml --password mypassword
+
+# Interactive password prompt (when no other auth available)
+ipng-router-backup --config config.yaml
+# Output: "No SSH key found. Enter SSH password: "
+```
+
+**Security Considerations:**
+- Passwords visible in process lists
+- Not suitable for automation
+- Consider using key-based authentication instead
+
+## Output Format
+
+### File Naming
+
+Output files are named after the device hostname:
+- Device `asw100` → File `asw100`
+- Device `192.168.1.1` → File `192.168.1.1`
+
+### File Content Structure
+
+Each output file contains all command outputs with headers:
+
+```
+## COMMAND: show version
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+Hostname             : asw100
+Chassis Type         : 7220 IXR-D4
+Software Version     : v25.3.2
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+## COMMAND: show platform linecard
++-------------+----+-------------+-------------------+---------------------------------+
+| Module Type | ID | Admin State | Operational State |              Model              |
++=============+====+=============+===================+=================================+
+| linecard    | 1  | N/A         | up                | imm28-100g-qsfp28+8-400g-qsfpdd |
++-------------+----+-------------+-------------------+---------------------------------+
+```
+
+### File Behavior
+
+- **New runs**: Files are truncated and recreated
+- **Multiple commands**: All outputs concatenated in single file
+- **Command identification**: Each command prefixed with `## COMMAND: <command>`
+
+## Usage Examples
+
+### Basic Backup All Devices
+
+```bash
+ipng-router-backup --config /etc/backup/network.yaml --output-dir /backup/$(date +%Y%m%d)
+```
+
+### Backup Specific Device Types
+
+Create a config with only the devices you want, or use `--host`:
+
+```bash
+# Backup only SR Linux devices
+ipng-router-backup --config network.yaml --host asw100 --host asw120 --host asw121
+```
+
+### Scheduled Backup with SSH Agent
+
+```bash
+#!/bin/bash
+# /etc/cron.daily/network-backup
+
+# Start SSH agent
+eval "$(ssh-agent -s)"
+ssh-add /root/.ssh/network_backup_key
+
+# Run backup
+BACKUP_DIR="/backup/network/$(date +%Y%m%d)"
+mkdir -p "$BACKUP_DIR"
+
+ipng-router-backup \
+  --config /etc/network-backup/config.yaml \
+  --output-dir "$BACKUP_DIR"
+
+# Kill SSH agent
+ssh-agent -k
+```
+
+### Emergency Single Device Backup
+
+```bash
+# Quick backup of single device with password
+ipng-router-backup \
+  --config emergency.yaml \
+  --host core-router-01 \
+  --password emergency123 \
+  --output-dir /tmp/emergency-backup
+```
+
+## Error Handling
+
+### Common Issues and Solutions
+
+**Device Connection Failures:**
+- Check SSH connectivity: `ssh user@hostname`
+- Verify authentication method
+- Check firewall rules and network connectivity
+
+**Configuration Errors:**
+- Validate YAML syntax: `yamllint config.yaml`
+- Check that all referenced types exist
+- Ensure all devices have required fields
+
+**Permission Issues:**
+- Verify SSH key permissions (600)
+- Check output directory write permissions
+- Ensure user has SSH access to target devices
+
+### Exit Codes
+
+- `0`: Success
+- `1`: Configuration error, authentication failure, or connection issues
+
+## Advanced Usage
+
+### Integration with Git
+
+```bash
+#!/bin/bash
+# Backup and commit to git repository
+
+BACKUP_DIR="/backup/network-configs"
+cd "$BACKUP_DIR"
+
+# Run backup
+ipng-router-backup --config config.yaml --output-dir .
+
+# Commit changes
+git add .
+git commit -m "Network backup $(date '+%Y-%m-%d %H:%M:%S')"
+git push origin main
+```
+
+### Custom Command Sets per Environment
+
+```yaml
+types:
+  production-srlinux:
+    commands:
+      - show version
+      - show system information  
+      - info flat from running
+      
+  lab-srlinux:
+    commands:
+      - show version
+      - show interface brief
+
+devices:
+  prod-asw100:
+    user: readonly
+    type: production-srlinux
+    
+  lab-asw100:
+    user: admin
+    type: lab-srlinux
+```
+
+### Monitoring and Alerting
+
+```bash
+#!/bin/bash
+# Backup with monitoring
+
+if ipng-router-backup --config config.yaml --output-dir /backup; then
+    echo "Backup completed successfully" | logger
+else
+    echo "Backup failed!" | logger
+    # Send alert email
+    echo "Network backup failed at $(date)" | mail -s "Backup Alert" admin@company.com
+fi
+```

docs/router_backup.1

@@ -1,4 +1,4 @@
-.TH IPNG-ROUTER-BACKUP 1 "July 2025" "ipng-router-backup 1.0.0" "User Commands"
+.TH IPNG-ROUTER-BACKUP 1 "July 2025" "ipng-router-backup" "User Commands"
 .SH NAME
 ipng-router-backup \- SSH Router Backup Tool
 .SH SYNOPSIS
@@ -108,4 +108,4 @@ Report bugs to <pim@ipng.ch>
 .SH SEE ALSO
 .BR ssh (1),
 .BR ssh-agent (1),
-.BR dpkg (1)
+.BR dpkg (1)

src/main.go

@@ -1,3 +1,5 @@
+// Copyright 2025, IPng Networks GmbH, Pim van Pelt <pim@ipng.ch>
+
 package main
 
 import (
@@ -15,6 +17,8 @@ import (
 	"gopkg.in/yaml.v2"
 )
 
+const Version = "1.0.1"
+
 // Config structures
 type Config struct {
 	Types   map[string]DeviceType `yaml:"types"`
@@ -129,7 +133,7 @@ func (rb *RouterBackup) BackupCommands(commands []string, outputDir string) erro
 		return fmt.Errorf("failed to create directory %s: %v", outputDir, err)
 	}
 
-	filename := fmt.Sprintf("%s.txt", rb.hostname)
+	filename := rb.hostname
 	filepath := filepath.Join(outputDir, filename)
 
 	// Truncate file at start
@@ -224,10 +228,13 @@ func main() {
 	var hostFilter []string
 
 	var rootCmd = &cobra.Command{
-		Use:   "ipng-router-backup",
+		Use:     "ipng-router-backup",
-		Short: "SSH Router Backup Tool",
+		Short:   "SSH Router Backup Tool",
-		Long:  "Connects to routers via SSH and runs commands, saving output to local files.",
+		Long:    "Connects to routers via SSH and runs commands, saving output to local files.",
+		Version: Version,
 		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Printf("IPng Networks Router Backup v%s\n", Version)
+
 			// Load configuration
 			config, err := loadConfig(configPath)
 			if err != nil {
@@ -327,4 +334,4 @@ func main() {
 	if err := rootCmd.Execute(); err != nil {
 		log.Fatal(err)
 	}
-}
+}

src/main_test.go

@@ -0,0 +1,287 @@
+// Copyright 2025, IPng Networks GmbH, Pim van Pelt <pim@ipng.ch>
+
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestNewRouterBackup(t *testing.T) {
+	rb := NewRouterBackup("test-host", "test-user", "test-pass", "/test/key", 2222)
+
+	if rb.hostname != "test-host" {
+		t.Errorf("Expected hostname 'test-host', got '%s'", rb.hostname)
+	}
+	if rb.username != "test-user" {
+		t.Errorf("Expected username 'test-user', got '%s'", rb.username)
+	}
+	if rb.password != "test-pass" {
+		t.Errorf("Expected password 'test-pass', got '%s'", rb.password)
+	}
+	if rb.keyFile != "/test/key" {
+		t.Errorf("Expected keyFile '/test/key', got '%s'", rb.keyFile)
+	}
+	if rb.port != 2222 {
+		t.Errorf("Expected port 2222, got %d", rb.port)
+	}
+}
+
+func TestFindDefaultSSHKey(t *testing.T) {
+	// Create a temporary directory to simulate home directory
+	tempDir := t.TempDir()
+	sshDir := filepath.Join(tempDir, ".ssh")
+	err := os.MkdirAll(sshDir, 0755)
+	if err != nil {
+		t.Fatalf("Failed to create .ssh directory: %v", err)
+	}
+
+	// Create a fake SSH key
+	keyPath := filepath.Join(sshDir, "id_rsa")
+	err = os.WriteFile(keyPath, []byte("fake-key"), 0600)
+	if err != nil {
+		t.Fatalf("Failed to create fake SSH key: %v", err)
+	}
+
+	// Temporarily change HOME environment variable
+	originalHome := os.Getenv("HOME")
+	defer os.Setenv("HOME", originalHome)
+	os.Setenv("HOME", tempDir)
+
+	result := findDefaultSSHKey()
+	if result != keyPath {
+		t.Errorf("Expected SSH key path '%s', got '%s'", keyPath, result)
+	}
+}
+
+func TestFindDefaultSSHKeyNotFound(t *testing.T) {
+	// Create a temporary directory with no SSH keys
+	tempDir := t.TempDir()
+
+	// Temporarily change HOME environment variable
+	originalHome := os.Getenv("HOME")
+	defer os.Setenv("HOME", originalHome)
+	os.Setenv("HOME", tempDir)
+
+	result := findDefaultSSHKey()
+	if result != "" {
+		t.Errorf("Expected empty string when no SSH key found, got '%s'", result)
+	}
+}
+
+func TestLoadConfig(t *testing.T) {
+	// Create a temporary config file
+	tempDir := t.TempDir()
+	configPath := filepath.Join(tempDir, "test-config.yaml")
+
+	configContent := `types:
+  test-type:
+    commands:
+      - show version
+      - show status
+
+devices:
+  test-device:
+    user: testuser
+    type: test-type
+  direct-device:
+    user: directuser
+    commands:
+      - direct command
+`
+
+	err := os.WriteFile(configPath, []byte(configContent), 0644)
+	if err != nil {
+		t.Fatalf("Failed to create test config file: %v", err)
+	}
+
+	config, err := loadConfig(configPath)
+	if err != nil {
+		t.Fatalf("Failed to load config: %v", err)
+	}
+
+	// Test types section
+	if len(config.Types) != 1 {
+		t.Errorf("Expected 1 type, got %d", len(config.Types))
+	}
+
+	testType, exists := config.Types["test-type"]
+	if !exists {
+		t.Error("Expected 'test-type' to exist in types")
+	}
+
+	if len(testType.Commands) != 2 {
+		t.Errorf("Expected 2 commands in test-type, got %d", len(testType.Commands))
+	}
+
+	// Test devices section
+	if len(config.Devices) != 2 {
+		t.Errorf("Expected 2 devices, got %d", len(config.Devices))
+	}
+
+	testDevice, exists := config.Devices["test-device"]
+	if !exists {
+		t.Error("Expected 'test-device' to exist in devices")
+	}
+
+	if testDevice.User != "testuser" {
+		t.Errorf("Expected user 'testuser', got '%s'", testDevice.User)
+	}
+
+	if testDevice.Type != "test-type" {
+		t.Errorf("Expected type 'test-type', got '%s'", testDevice.Type)
+	}
+}
+
+func TestLoadConfigInvalidFile(t *testing.T) {
+	_, err := loadConfig("/nonexistent/config.yaml")
+	if err == nil {
+		t.Error("Expected error when loading nonexistent config file")
+	}
+}
+
+func TestLoadConfigInvalidYAML(t *testing.T) {
+	tempDir := t.TempDir()
+	configPath := filepath.Join(tempDir, "invalid-config.yaml")
+
+	// Create invalid YAML content
+	invalidYAML := `types:
+  test-type:
+    commands:
+      - show version
+    invalid: [unclosed
+`
+
+	err := os.WriteFile(configPath, []byte(invalidYAML), 0644)
+	if err != nil {
+		t.Fatalf("Failed to create invalid config file: %v", err)
+	}
+
+	_, err = loadConfig(configPath)
+	if err == nil {
+		t.Error("Expected error when loading invalid YAML")
+	}
+}
+
+func TestBackupCommandsDirectoryCreation(t *testing.T) {
+	rb := NewRouterBackup("test-host", "test-user", "", "", 22)
+
+	tempDir := t.TempDir()
+	outputDir := filepath.Join(tempDir, "new-directory")
+
+	// Test with empty commands to avoid SSH connection
+	err := rb.BackupCommands([]string{}, outputDir)
+	if err != nil {
+		t.Fatalf("BackupCommands failed: %v", err)
+	}
+
+	// Check if directory was created
+	if _, err := os.Stat(outputDir); os.IsNotExist(err) {
+		t.Error("Expected output directory to be created")
+	}
+}
+
+func TestBackupCommandsFileCreation(t *testing.T) {
+	rb := NewRouterBackup("test-host", "test-user", "", "", 22)
+
+	tempDir := t.TempDir()
+	expectedFilePath := filepath.Join(tempDir, "test-host")
+
+	// Test with empty commands to avoid SSH connection
+	err := rb.BackupCommands([]string{}, tempDir)
+	if err != nil {
+		t.Fatalf("BackupCommands failed: %v", err)
+	}
+
+	// Check if file was created
+	if _, err := os.Stat(expectedFilePath); os.IsNotExist(err) {
+		t.Error("Expected output file to be created")
+	}
+}
+
+// Benchmark tests
+func BenchmarkNewRouterBackup(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NewRouterBackup("bench-host", "bench-user", "bench-pass", "/bench/key", 22)
+	}
+}
+
+func BenchmarkLoadConfig(b *testing.B) {
+	// Create a temporary config file
+	tempDir := b.TempDir()
+	configPath := filepath.Join(tempDir, "bench-config.yaml")
+
+	configContent := `types:
+  srlinux:
+    commands:
+      - show version
+      - show platform linecard
+
+devices:
+  device1:
+    user: user1
+    type: srlinux
+  device2:
+    user: user2
+    type: srlinux
+`
+
+	err := os.WriteFile(configPath, []byte(configContent), 0644)
+	if err != nil {
+		b.Fatalf("Failed to create benchmark config file: %v", err)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_, err := loadConfig(configPath)
+		if err != nil {
+			b.Fatalf("Failed to load config: %v", err)
+		}
+	}
+}
+
+// Example test to demonstrate usage
+func ExampleNewRouterBackup() {
+	rb := NewRouterBackup("example-host", "admin", "", "/home/user/.ssh/id_rsa", 22)
+	_ = rb // Use the router backup instance
+}
+
+// Table-driven test for multiple scenarios
+func TestRouterBackupCreation(t *testing.T) {
+	tests := []struct {
+		name     string
+		hostname string
+		username string
+		password string
+		keyFile  string
+		port     int
+	}{
+		{"Basic", "host1", "user1", "pass1", "/key1", 22},
+		{"Custom Port", "host2", "user2", "pass2", "/key2", 2222},
+		{"No Password", "host3", "user3", "", "/key3", 22},
+		{"No Key", "host4", "user4", "pass4", "", 22},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			rb := NewRouterBackup(tt.hostname, tt.username, tt.password, tt.keyFile, tt.port)
+
+			if rb.hostname != tt.hostname {
+				t.Errorf("Expected hostname '%s', got '%s'", tt.hostname, rb.hostname)
+			}
+			if rb.username != tt.username {
+				t.Errorf("Expected username '%s', got '%s'", tt.username, rb.username)
+			}
+			if rb.password != tt.password {
+				t.Errorf("Expected password '%s', got '%s'", tt.password, rb.password)
+			}
+			if rb.keyFile != tt.keyFile {
+				t.Errorf("Expected keyFile '%s', got '%s'", tt.keyFile, rb.keyFile)
+			}
+			if rb.port != tt.port {
+				t.Errorf("Expected port %d, got %d", tt.port, rb.port)
+			}
+		})
+	}
+}

src/version_test.go

@@ -0,0 +1,19 @@
+// Copyright 2025, IPng Networks GmbH, Pim van Pelt <pim@ipng.ch>
+
+package main
+
+import (
+	"testing"
+)
+
+func TestVersion(t *testing.T) {
+	if Version == "" {
+		t.Error("Version constant should not be empty")
+	}
+
+	// Test that version follows semantic versioning pattern
+	// This is a basic check - could be more sophisticated
+	if len(Version) < 5 { // minimum "1.0.0" format
+		t.Errorf("Version '%s' seems too short for semantic versioning", Version)
+	}
+}