- in section 1 (User commands):
| obexctl | obfs4proxy | objcopy | objdump |
| oclock | ocsptool | od | okular |
| on_ac_power | open | openapp | opentool |
| openvt | orca | osage |
- in section 1ssl (SSL programs):
- in section 2 (System calls):
| oldfstat | oldlstat | oldolduname | oldstat |
| olduname | open | openat | openat2 |
| open_by_handle_at | outb | outb_p | outl |
| outl_p | outsb | outsl | outsw |
| outw | outw_p |
| open_how |
- in section 3 (Library functions):
- in section 3form (SVR4 compatible screen forms - ncurses):
| opts |
- in section 3menu (Ncurses - SVR4 compatible screen menus):
| opts |
- in section 3ncurses (Ncurses (terminal screen painting)):
| OK | opaque | ospeed | outopts |
| overlay | overwrite |
- in section 3perl (Perl modules):
| O | ODBM_File | ok | Opcode |
| open | ops | overload | overloading |
- in section 3ssl (SSL library):
| off64_t | off_t |
- in section 5 (File formats):
- in section 7 (Miscellaneous):
| operator |
- in section 7ssl (SSL library):
- in section 8 (System administration commands):
| ownership |
Generated by dwww version 1.16 on Fri Oct 2 03:54:57 CEST 2026.