What command do you use to view the last 20 lines of a text file or log?

When working with Linux, I often use the following command-line tools and utilities:

• ls, cd, pwd — for navigating the filesystem.
• grep — for searching text within files.
• awk and sed — for processing and transforming text data.
• top and htop — for monitoring system processes and resources.
• ps — for viewing running processes.
• df and du — for assessing disk space usage.
• tar, zip, unzip — for archiving and extracting files.
• ssh — for remote server connections.
• curl and wget — for downloading data from the internet.
• systemctl — for managing system services.
• chmod, chown — for managing file permissions.

These tools allow for efficient system management, task automation, and quick access to necessary information.