How to view error and access logs?

By Using Apache (Linux)

Step 1: Open Terminal:

Use SSH or terminal access to your Linux server.

Step 2: View Access Logs:

sudo tail -f /var/log/apache2/access.log

This shows who accessed your website and when.

Step 3: View Error Logs:

sudo tail -f /var/log/apache2/error.log

This shows server errors, PHP issues, and more.

Tip:

Use tail -n 50 to view the last 50 lines only.

By Using Nginx (Linux)

Step 1: Access Terminal via SSH.

Step 2: View Access Logs:

sudo tail -f /var/log/nginx/access.log

Step 3: View Error Logs:

sudo tail -f /var/log/nginx/error.log

By Using Node.js (Using PM2)

Step 1: Make Sure PM2 is Installed:

npm install -g pm2

Step 2: Start Your App with PM2:

pm2 start app.js

Step 3: View Logs:

pm2 logs

Optional:

To view logs of a specific process:

pm2 logs <process_name>