grent(category28-ispconfig.html) - phpMan

endgrent (3)         - get group file entry
endgrent (3p)        - group database entry functions
endnetgrent (3)      - handle network group entries
fgetgrent (3)        - get group file entry
fgetgrent_r (3)      - get group file entry reentrantly
getgrent (3)         - get group file entry
getgrent (3p)        - get the group database entry
getgrent_r (3)       - get group file entry reentrantly
getnetgrent (3)      - handle network group entries
getnetgrent_r (3)    - handle network group entries
putgrent (3)         - write a group database entry to a file
setgrent (3)         - get group file entry
setgrent (3p)        - reset the group database to the first entry
setnetgrent (3)      - handle network group entries
User::grent (3pm)    - by-name interface to Perl's built-in getgr*() functions