To determine your system's current and former run level, which command should you use?

The command to determine your system's current and former run level is runlevel. When executed, this command provides access to information regarding the system's operational state, which is defined by run levels. Each run level has a specific function, such as single-user mode, multi-user mode, or graphical mode, and this command reports the previous and current run levels.

This knowledge is particularly important when managing services and system states in Linux environments. By observing the run levels, administrators can make informed decisions about the state of the system, which is fundamental for system maintenance and troubleshooting.

Other commands listed may not exist in standard Linux distributions or don’t provide the same information directly related to run levels. Therefore, understanding the specific function of runlevel solidifies why it is the correct choice for this inquiry.