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URL: [100+ Linux Interview Questions](#)
Practice Verified Codes and Commands:
1. Check Linux Version:
cat /etc/os-release
- List all files in a directory (including hidden files):
ls -la
3. Find a file by name:
find / -name filename.txt
4. Check disk space usage:
df -h
5. Check memory usage:
free -m
- Search for a specific string in a file:
grep "search_string" filename.txt
7. Create a new directory:
mkdir new_directory
8. Remove a directory:
rm -r directory_name
9. Change file permissions:
chmod 755 filename.sh
10. Compress a file using tar:
tar -czvf archive_name.tar.gz /path/to/directory
What Undercode Says:
Linux is a powerful operating system that is widely used in various IT environments, from servers to embedded systems. Mastering Linux commands and understanding its architecture is crucial for anyone pursuing a career in IT or cybersecurity. The commands listed above are fundamental and frequently used in day-to-day operations.
For those preparing for Linux interviews, it’s essential to not only know these commands but also understand their nuances. For example, knowing how to use `grep` with regular expressions or understanding the difference between `chmod` and `chown` can set you apart from other candidates.
Additionally, Linux is highly customizable, and scripting is a significant part of managing Linux systems. Learning shell scripting can automate repetitive tasks, making you more efficient. Commands like awk, sed, and `cron` are invaluable for advanced users.
For cybersecurity professionals, Linux is often the go-to OS for penetration testing and security analysis. Tools like nmap, Wireshark, and `Metasploit` are commonly run on Linux systems. Understanding how to secure a Linux server, including configuring firewalls with `iptables` or ufw, is also critical.
In conclusion, whether you’re an IT professional, a developer, or a cybersecurity expert, Linux skills are indispensable. The more you practice and explore, the more proficient you’ll become. Keep experimenting with different commands, and don’t hesitate to dive into the man pages (man command_name) for deeper insights.
Further Reading:
References:
Hackers Feeds, Undercode AI
