Completed a thorough review of Linux basics.

[kangketikonlen]

Completed a Thorough Review of Linux Basics

1. Review Basic Commands:
   • Revisited and reinforced understanding of fundamental commands such as ls, cd, pwd, cp, mv, rm, etc.
2. File Permissions:
   • Understood file permissions (chmod) and ownership (chown).
   • Learned how to modify permissions to control access to files and directories.
3. Text Manipulation:
   • Familiarized with text manipulation commands like cat, grep, sed, and awk.
   • Learned how to redirect input and output.
4. Processes and System Monitoring:
   • Explored commands like ps, top, and htop to monitor and manage processes.
   • Understood how to use kill to terminate processes.
5. User and Group Management:
   • Learned how to add, modify, and remove users with commands like useradd, usermod, and userdel.
   • Understood group management with commands like groupadd, groupmod, and groupdel.
6. System Information:
   • Explored commands like uname, hostname, df, and free to gather system information.
   • Learned about the /proc directory for detailed system information.
7. Networking:
   • Understood basic networking commands like ifconfig, ping, traceroute, and netstat.
   • Explored the ip command for more advanced networking configurations.
8. Package Management:
   • Depending on the distribution, familiarized with package management commands like apt (Debian/Ubuntu) or yum (Red Hat/CentOS).
9. Shell Scripting Basics:
   • Got comfortable with basic shell scripting concepts, such as variables, loops, and conditionals.
   • Wrote simple scripts to automate common tasks.
10. Security:
    • Learned about basic security measures, including configuring firewalls (iptables), securing SSH, and managing users securely.

Takeaways: Took the time to practice and apply each concept in a real or virtual Linux environment, building a solid foundation for further DevOps exploration.