linux-shell-scripting

# Linux Production Shell Scripts ## Purpose Provide production-ready shell script templates for common Linux system administration tasks including backups, monitoring, user management, log analysis, and automation. These scripts serve as building blocks for security operations and penetration testing environments. ## Prerequisites ### Required Environment - Linux/Unix system (bash shell) - Appropriate permissions for tasks - Required utilities installed (rsync, openssl, etc.) ### Required Knowledge - Basic bash scripting - Linux file system structure - System administration concepts ## Outputs and Deliverables 1. **Backup Solutions** - Automated file and database backups 2. **Monitoring Scripts** - Resource usage tracking 3. **Automation Tools** - Scheduled task execution 4. **Security Scripts** - Password management, encryption ## Core Workflow ### Phase 1: File Backup Scripts **Basic Directory Backup** ```bash #!/bin/bash backup_dir="/path/to/backup" source_dir="/path/to/source" # Create a timestamped backup of the source directory tar -czf "$backup_dir/backup_$(date +%Y%m%d_%H%M%S).tar.gz" "$source_dir" echo "Backup completed: backup_$(date +%Y%m%d_%H%M%S).tar.gz" ``` **Remote Server Backup** ```bash #!/bin/bash source_dir="/path/to/source" remote_server="user@remoteserver:/path/to/backup" # Backup files/directories to a remote server using rsync rsync -avz --progress "$source_dir" "$remote_server" echo "Files backed up to remote server." ``` **Backup Rotatio...