Check basic info in Linux

 

Check System Information:

• Display general system information.

  bash
  uname -a
  

2. Check Linux Distribution:

• Identify the Linux distribution and version.

  bash
  lsb_release -a
  

3. Check Kernel Version:

• View the Linux kernel version.

  bash
  uname -r
  

4. Check CPU Information:

• Display information about the CPU.

  bash
  lscpu
  

5. Check Memory Usage:

• View memory usage statistics.

  bash
  free -m
  

6. Check Disk Space:

• Display disk space usage.

  bash
  df -h
  

7. Check Network Configuration:

• Show network interface information.

  bash
  ip a
  

8. Check Running Processes:

• Display information about running processes.

  bash
  top
  

  • Press q to exit.

9. Check System Uptime:

• Find out how long the system has been running.

  bash
  uptime
  

10. Check Users Currently Logged In:

• View a list of currently logged-in users.

  bash
  who
  

11. Check File System Information:

• Display file system information.

  bash
  cat /etc/fstab
  

12. Check Active Network Connections:

• View active network connections.

  bash
  netstat -tulpn
  

13. Check System Logs:

• Check system logs for errors and messages.

  bash
  dmesg
  

14. Check Last System Reboot:

• Display information about the last system reboot.

  bash
  last reboot
  

15. Check Installed Packages:

• List installed packages.

  bash
  dpkg -l        # For Debian-based systems (e.g., Ubuntu)
  rpm -qa        # For Red Hat-based systems (e.g., CentOS)
  

These commands provide a quick overview of various aspects of a Linux system. Adjustments may be needed depending on the specific Linux distribution being used.