The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2016 The IEEE and The Open Group, All Rights reserved.

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### O

- od - dump files in various formats
- open(), openat - open file
- openat(), open - open file
- opendir(), fdopendir - open directory associated with file descriptor
- openlog(), closelog, setlogmask, syslog - control system log
- open_memstream(), open_wmemstream - open a dynamic memory buffer stream
- open_wmemstream(), open_memstream - open a dynamic memory buffer stream
- optarg, getopt, opterr, optind, optopt - command option parsing
- opterr, getopt, optarg, optind, optopt - command option parsing
- optind, getopt, optarg, opterr, optopt - command option parsing
- optopt, getopt, optarg, opterr, optind - command option parsing

Topics

- Object File
- Octet
- Offset Maximum
- Opaque Address
- Open File Description
- Open File
- Operand
- Operator
- Option-Argument
- Option
- Orientation
- Orphaned Process Group
- Other Environment Variables
- Other Language-Related Specifications
- Output Devices and Terminal Types