Bash Collections

This repository contains a collection of Bash scripts for various DevOps, cloud, and system administration purposes. Feel free to explore and use these scripts as needed.

📁 Scripts by Category

System Monitoring & Security

• 07-simple-ssh-monitor/ - SSH brute force detection and IP blacklisting with Telegram alerts
• 08-certificate-expiration-monitor/ - SSL certificate expiration monitoring
• 16-systemd-service-manager/ - Simplified systemd service management
• 17-nginx-log-analyzer/ - Lightweight Nginx access log analyzer
• 18-disk-space-alert/ - Disk usage alerting via Telegram/Slack/Email

Cloud & DevOps

• 09-sync-ecr-between-account-or-profile/ - Sync AWS ECR repositories across accounts
• 10-export-kube-yaml-manifest/ - Export Kubernetes resources to YAML
• 11-cleanup-aws/ - Destructive AWS resource cleanup script
• 12-aws-s3-backup/ - Backup to AWS S3 with encryption
• 14-k8s-pod-restart/ - Kubernetes workload restart helper
• 15-postgres-backup/ - PostgreSQL database backup
• 20-aws-cost-monitor/ - Daily AWS cost monitor
• 22-k8s-namespace-cleaner/ - Stale Kubernetes resource cleanup
• 23-git-repo-syncer/ - Batch update multiple git repositories
• 24-database-connection-tester/ - Test connectivity to various databases
• 25-docker-compose-healthcheck/ - Monitor Docker Compose service health

Docker & Containers

• 05-install-docker-ubuntu/ - Docker installation on Ubuntu
• 13-docker-logs-rotate/ - Docker log rotation and cleanup
• 19-docker-image-cleanup/ - Automated Docker image/volume cleanup

Networking

• 02-find-subdomains/ - Find subdomains via crt.sh
• 03-socat/ - Socat network utilities
• 04-network-namespace/ - Network namespace management
• 06-basic-ufw-rules/ - UFW firewall setup
• 21-logs-shipper/ - Ship logs to remote server via SCP

File & Data Management

• 01-rename-file-with-same-patern/ - Rename files with pattern matching

🆕 New Scripts

12-aws-s3-backup/

Backup directories and files to AWS S3 with compression and optional AES-256 encryption.

13-docker-logs-rotate/

Automatically rotate and clean up Docker container logs to prevent disk exhaustion.

14-k8s-pod-restart/

Gracefully restart Kubernetes workloads with selector-based restarts.

15-postgres-backup/

Create compressed automated backups of PostgreSQL databases.

18-disk-space-alert/

Monitor filesystem disk usage with multi-channel alerting.

22-k8s-namespace-cleaner/

Clean up stale Kubernetes resources in namespaces (failed pods, old replicasets, etc.).

23-git-repo-syncer/

Batch update and manage multiple git repositories.

24-database-connection-tester/

Test connectivity to various database systems (MySQL, Postgres, Redis, MongoDB).

25-docker-compose-healthcheck/

Monitor the health status of Docker Compose services with a configurable timeout.

Contribution

If you have a Bash script that you'd like to add to this collection, feel free to submit a pull request. Contributions are welcome!

📝 Usage Guidelines

Each script includes:

• Detailed comments at the top explaining purpose and requirements
• Usage examples
• Configuration options
• Error handling and logging
• README.md with complete documentation

To use any script:

1. Navigate to the script directory
2. Read the README.md for specific requirements
3. Make the script executable: chmod +x script.sh
4. Run the script: ./script.sh