ttys(5) - phpMan

endttyent (3)        - get ttys file entry
getttyent (3)        - get ttys file entry
getttynam (3)        - get ttys file entry
setttyent (3)        - get ttys file entry
ttyS (4)             - serial terminal lines
ttyslot (3)          - find the slot of the current user's terminal in some file