ac:tldr:e2075

ac: Print how long the current user has been connected in hours.

$ ac

try on your machine

The command "ac" can refer to different things depending on the context in which it is used. Here are a few possible explanations:

ac (command): In Unix-like operating systems, the "ac" command is used to display statistics about user logon and logoff times. It typically reads data from the wtmp or utmp log files and provides information on user sessions, including the duration of their logins.
ac (alternate current): In the context of electrical engineering, "ac" stands for "alternating current." It describes the flow of electric charge that periodically reverses direction, commonly used in residential and commercial electrical systems to power appliances and devices using AC voltage.
ac (abbreviation): "ac" can also be short for other words or phrases depending on the context. For instance, it can refer to "air conditioning" in relation to climate control systems, "accounting" in a business context, or "assistant coach" in sports terminology.

To provide a more accurate explanation, please provide additional context or specify which particular aspect of "ac" you are referring to.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

back to the ac tool