# ac > Print statistics on how long users have been connected. > More information: . - Print how long the current user has been connected in hours: `ac` - Print how long users have been connected in hours: `ac -p` - Print how long a particular user has been connected in hours: `ac -p {{username}}` - Print how long a particular user has been connected in hours per [d]ay (with total): `ac -dp {{username}}`