linux-sysadmin-journey/projects/02-command-line-mastery/levels/level-2

Level 2: Process Whisperer 💻

Overview

Master process management and system resource control.

Stage 2-1: Resource Detective

Mission: Identify and manage resource-intensive processes

Setup:

# Create resource-intensive processes
yes > /dev/null &
dd if=/dev/zero of=/dev/null &

Challenges:

1. Identify top CPU-consuming processes
2. Find memory-intensive applications
3. Adjust process priorities
4. Kill runaway processes
5. Monitor system load

Success Criteria:

• Processes correctly identified
• Resources optimized
• System stability maintained
• Efficient command usage

Skills Used:

• top/htop
• ps
• nice/renice
• kill/pkill
• uptime

Stage 2-2: Service Sorcerer

Mission: Troubleshoot and fix system services

Setup:

# Install and configure test services
sudo apt install nginx
sudo systemctl stop nginx

Challenges:

1. Check service status
2. Analyze service logs
3. Fix dependencies
4. Configure service parameters
5. Create basic systemd service

Success Criteria:

• Services running correctly
• Logs properly analyzed
• Dependencies resolved
• Automation implemented

Skills Used:

• systemctl
• journalctl
• service
• status
• Log analysis