toent(3) - phpMan

endprotoent (3)      - get protocol entry
endprotoent (3p)     - network protocol database functions
getprotoent (3)      - get protocol entry
getprotoent (3p)     - network protocol database functions
getprotoent_r (3)    - get protocol entry (reentrant)
Net::protoent (3pm)  - by-name interface to Perl's built-in getproto*() funct...
setprotoent (3)      - get protocol entry
setprotoent (3p)     - network protocol database functions