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INFORMATION TECHNOLOGY - PORTABLE OPERATING SYSTEM INTERFACE (POSIX) - PART 4: RATIONALE
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Available format(s): Hardcopy, PDF
Withdrawn date: 19-01-2014
Language(s): English
Published date: 31-12-2004
Publisher: Canadian Standards Association
Part A Base DefinitionsAppendix A Rationale for Base DefinitionsA.1 Introduction A.1.1 Scope A.1.2 Conformance A.1.3 Normative References A.1.4 Terminology A.1.5 PortabilityA.2 Conformance A.2.1 Implementation Conformance A.2.2 Application Conformance A.2.3 Language-Dependent Services for the C Programming Language A.2.4 Other Language-Related SpecificationsA.3 DefinitionsA.4 General Concepts A.4.1 Concurrent Execution A.4.2 Directory Protection A.4.3 Extended Security Controls A.4.4 File Access Permissions A.4.5 File Hierarchy A.4.6 Filenames A.4.7 File Times Update A.4.8 Host and Network Byte Order A.4.9 Measurement of Execution Time A.4.10 Memory Synchronization A.4.11 Pathname Resolution A.4.12 Process ID Reuse A.4.13 Scheduling Policy A.4.14 Seconds Since the Epoch A.4.15 Semaphore A.4.16 Thread-Safety A.4.17 Tracing A.4.18 Treatment of Error Conditions for Mathematical Functions A.4.19 Treatment of NaN Arguments for Mathematical Functions A.4.20 Utility A.4.21 Variable AssignmentA.5 File Format NotationA.6 Character Set A.6.1 Portable Character Set A.6.2 Character Encoding A.6.3 C Language Wide-Character Codes A.6.4 Character Set Description FileA.7 Locale A.7.1 General A.7.2 POSIX Locale A.7.3 Locale Definition A.7.4 Locale Definition Grammar A.7.5 Locale Definition ExampleA.8 Environment Variables A.8.1 Environment Variable Definition A.8.2 Internationalization Variables A.8.3 Other Environment VariablesA.9 Regular Expressions A.9.1 Regular Expression Definitions A.9.2 Regular Expression General Requirements A.9.3 Basic Regular Expressions A.9.4 Extended Regular Expressions A.9.5 Regular Expression GrammarA.10 Directory Structure and Devices A.10.1 Directory Structure and Files A.10.2 Output Devices and Terminal TypesA.11 General Terminal Interface A.11.1 Interface Characteristics A.11.2 Parameters that Can be SetA.12 Utility Conventions A.12.1 Utility Argument Syntax A.12.2 Utility Syntax GuidelinesA.13 Headers A.13.1 Format of EntriesPart B System InterfacesAppendix B Rationale for System InterfacesB.1 Introduction B.1.1 Scope B.1.2 Conformance B.1.3 Normative References B.1.4 Change History B.1.5 Terminology B.1.6 Definitions B.1.7 Relationship to Other Formal Standards B.1.8 Portability B.1.9 Format of EntriesB.2 General Information B.2.1 Use and Implementation of Functions B.2.2 The Compilation Environment B.2.3 Error Numbers B.2.4 Signal Concepts B.2.5 Standard I/O Streams B.2.6 STREAMS B.2.7 XSI Interprocess Communication B.2.8 Realtime B.2.9 Threads B.2.10 Sockets B.2.11 Tracing B.2.12 Data TypesB.3 System Interfaces B.3.1 Examples for SpawnPart C Shell and UtilitiesAppendix C Rationale for Shell and UtilitiesC.1 Introduction C.1.1 Scope C.1.2 Conformance C.1.3 Normative References C.1.4 Change History C.1.5 Terminology C.1.6 Definitions C.1.7 Relationship to Other Documents C.1.8 Portability C.1.9 Utility Limits C.1.10 Grammar Conventions C.1.11 Utility Description Defaults C.1.12 Considerations for Utilities in Support of Files of Arbitrary Size C.1.13 Built-In UtilitiesC.2 Shell Command Language C.2.1 Shell Introduction C.2.2 Quoting C.2.3 Token Recognition C.2.4 Reserved Words C.2.5 Parameters and Variables C.2.6 Word Expansions C.2.7 Redirection C.2.8 Exit Status and Errors C.2.9 Shell Commands C.2.10 Shell Grammar C.2.11 Signals and Error Handling C.2.12 Shell Execution Environment C.2.13 Pattern Matching Notation C.2.14 Special Built-In UtilitiesC.3 Batch Environment Services and Utilities C.3.1 Batch General Concepts C.3.2 Batch Services C.3.3 Common Behavior for Batch Environment UtilitiesC.4 UtilitiesPart D Portability ConsiderationsAppendix D Portability Considerations (Informative)D.1 User Requirements D.1.1 Configuration Interrogation D.1.2 Process Management D.1.3 Access to Data D.1.4 Access to the Environment D.1.5 Access to Determinism and Performance Enhancements D.1.6 Operating System-Dependent Profile D.1.7 I/O Interaction D.1.8 Internationalization Interaction D.1.9 C-Language Extensions D.1.10 Command Language D.1.11 Interactive Facilities D.1.12 Accomplish Multiple Tasks Simultaneously D.1.13 Complex Data Manipulation D.1.14 File Hierarchy Manipulation D.1.15 Locale Configuration D.1.16 Inter-User Communication D.1.17 System Environment D.1.18 Printing D.1.19 Software DevelopmentD.2 Portability Capabilities D.2.1 Configuration Interrogation D.2.2 Process Management D.2.3 Access to Data D.2.4 Access to the Environment D.2.5 Bounded (Realtime) Response D.2.6 Operating System-Dependent Profile D.2.7 I/O Interaction D.2.8 Internationalization Interaction D.2.9 C-Language Extensions D.2.10 Command Language D.2.11 Interactive Facilities D.2.12 Accomplish Multiple Tasks Simultaneously D.2.13 Complex Data Manipulation D.2.14 File Hierarchy Manipulation D.2.15 Locale Configuration D.2.16 Inter-User Communication D.2.17 System Environment D.2.18 Printing D.2.19 Software Development D.2.20 Future GrowthD.3 Profiling Considerations D.3.1 Configuration Options D.3.2 Configuration Options (Shell and Utilities) D.3.3 Configurable Limits D.3.4 Configuration Options (System Interfaces) D.3.5 Configurable Limits D.3.6 Optional BehaviourPart E Subprofiling ConsiderationsAppendix E Subprofiling Considerations (Informative)E.1 Subprofiling Option GroupsIndex
Gives a standard operating system interface and environment, including a command interpreter (or 'shell'), and common utility programs to support applications portability at the source code level.
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