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You Should Know:
1. Basic Linux Commands:
– `ls` – List directory contents
– `cd` – Change directory
– `pwd` – Print working directory
– `mkdir` – Create a new directory
– `rm` – Remove files/directories
– `cp` – Copy files/directories
– `mv` – Move/rename files
2. File Permissions:
– `chmod` – Change file permissions (e.g., chmod 755 file.sh)
– `chown` – Change file ownership (e.g., chown user:group file.txt)
3. System Monitoring:
– `top` – Display running processes
– `htop` – Interactive process viewer
– `df -h` – Check disk space usage
– `free -m` – Check memory usage
4. Networking Commands:
– `ifconfig` / `ip a` – Network interface configuration
– `ping` – Test network connectivity
– `netstat` – Network statistics
– `ss` – Socket statistics
5. Package Management:
- Debian/Ubuntu: `apt update && apt upgrade`
- RHEL/CentOS: `yum update`
- Arch: `pacman -Syu`
6. Text Processing:
– `grep` – Search text (e.g., grep "error" logfile)
– `awk` – Text processing tool
– `sed` – Stream editor
7. SSH & Remote Access:
– `ssh user@host` – Connect to a remote server
– `scp` – Secure file transfer (e.g., scp file.txt user@host:/path)
8. Shell Scripting Basics:
#!/bin/bash echo "Hello, Linux!"
What Undercode Say:
Mastering Linux commands is essential for DevOps and system administration. Regular practice with file management, permissions, and scripting will enhance efficiency. Automation with Bash and monitoring tools like `htop` ensures smooth system operations.
Expected Output:
A well-structured Linux command guide for daily sysadmin tasks.
References:
Reported By: Kinge Hans – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
