groups(2) - phpMan

btrfs-balance (8)    - balance block groups on a btrfs filesystem
getgrouplist (3)     - get list of groups to which a user belongs
getgroups (2)        - get/set list of supplementary group IDs
getgroups (3p)       - get supplementary group IDs
getgroups32 (2)      - get/set list of supplementary group IDs
gmake (1)            - GNU make utility to maintain groups of programs
groups (1)           - print the groups a user is in
grpconv (8)          - convert to and from shadow passwords and groups
grpunconv (8)        - convert to and from shadow passwords and groups
initgroups (3)       - initialize the supplementary group access list
lid (1)              - Display user's groups or group's users
lvscan (8)           - List all logical volumes in all volume groups
make (1)             - GNU make utility to maintain groups of programs
make (1p)            - maintain, update, and regenerate groups of programs (D...
pwconv (8)           - convert to and from shadow passwords and groups
pwunconv (8)         - convert to and from shadow passwords and groups
setgroups (2)        - get/set list of supplementary group IDs
setgroups32 (2)      - get/set list of supplementary group IDs
systemd-cgtop (1)    - Show top control groups by their resource usage
sysusers.d (5)       - Declarative allocation of system users and groups
vgmerge (8)          - Merge volume groups
vgs (8)              - Display information about volume groups
vgscan (8)           - Search for all volume groups
yum-groups-manager (1) - create and edit yum's group metadata