What is the purpose of the swapon -s command?

The purpose of the swapon -s command is to display a summary of the currently active swap partitions on a system. When executed, it provides information such as the device name, type, size, and whether the swap area is currently in use. This is particularly useful for system administrators who need to monitor memory usage and ensure that enough swap space is available for optimal system performance.

In environments where memory demands may exceed physical RAM, properly configured swap space can help maintain system stability. By using this command, administrators can quickly assess the swap allocation and determine if adjustments are needed. The other options listed do not relate to the functionality of the swapon -s command; they pertain to services and partition management which are outside the scope of this command's purpose.