How well do you know the Linux operating system?

Linux is my primary working environment. I confidently use the command line for developing, debugging, and deploying Python applications.

Main areas of knowledge:

• Basic commands: navigating the filesystem (cd, ls, pwd), working with files (cp, mv, rm, mkdir), viewing content (cat, less, head, tail), searching (grep, find), process management (ps, top, kill).
• Package management: working with package managers (apt, yum, dnf) for installing, updating, and removing software.
• Process handling: understanding process lifecycle, running processes in the background, redirecting input/output.
• Network utilities: ping, traceroute, netstat, curl.
• System logs: viewing and analyzing logs to find errors.
• Bash scripting: writing simple scripts for automating routine tasks.
• Virtualization and containerization: experience with Docker and Vagrant, understanding their principles.
• Environment setup: working with environment variables, configuring access to files and directories.

Examples of everyday tasks:

• Deploying Python applications using Gunicorn/uWSGI and Nginx.
• Setting up virtual environments to isolate project dependencies.
• Using SSH for remote connection and server management.
• Monitoring system resources (CPU, RAM) to identify bottlenecks.

# Example of a simple bash script for creating a backup
#!/bin/bash
BACKUP_DIR="/var/backups/myapp"
TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
# Create backup directory if it doesn't exist
mkdir -p $BACKUP_DIR
# Archive the application directory
tar -czvf $BACKUP_DIR/myapp_backup_$TIMESTAMP.tar.gz /var/www/myapp

Overall, I possess a sufficient level of Linux proficiency for effective development and deployment of Python applications.