Commands to know Linux server status.

To check the status of a Linux server, you can use various commands and tools. Here are some common ones:

1. Uptime:

• Use the command uptime in the terminal.
• It displays how long the system has been running, the number of users, and the load average.

1. Top:

• Use the command top in the terminal.
• It provides real-time information about system resource usage, including CPU, memory, and processes.

1. Free:

• Use the command free in the terminal.
• It displays information about total, used, and free memory and swap space.

1. Vmstat:

• Use the command vmstat in the terminal.
• It provides information about system memory, processes, and CPU usage.

1. Iostat:

• Use the command iostat in the terminal.
• It provides information about CPU, disk, and input/output statistics.

1. Netstat:

• Use the command netstat in the terminal.
• It displays network connections, routing tables, and more.

1. Htop:

• If installed, you can use the htop command in the terminal.
• It is an interactive process viewer that provides a more user-friendly interface compared to top.

1. Systemctl:

• Use the systemctl command to manage services.
• For example, systemctl status <service_name> will show the status of a specific service.

1. Journalctl:

• Use the journalctl command to view system logs.
• For example, journalctl -xe will show recent system logs.

1. Df:
   • Use the command df in the terminal.
   • It displays information about disk space usage.
2. Ifconfig / Ip:
   • Use ifconfig or ip to view network interface information.
   • For example, ifconfig or ip addr show will display details about network interfaces.
3. Ping:
   • Use the ping command to check network connectivity to a specific host.
   • For example, ping google.com will check the connectivity to Google’s servers.

Remember, some of these commands may require administrative privileges or may need to be run with sudo depending on your system configuration. Always exercise caution when using commands that can affect system settings or services.