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| <!-- %MENU% Introduction to the I/O facilities --> |
| <h2 class="chapter">11 Input/Output Overview</h2> |
| |
| <p>Most programs need to do either input (reading data) or output (writing |
| data), or most frequently both, in order to do anything useful. The GNU |
| C library provides such a large selection of input and output functions |
| that the hardest part is often deciding which function is most |
| appropriate! |
| |
| <p>This chapter introduces concepts and terminology relating to input |
| and output. Other chapters relating to the GNU I/O facilities are: |
| |
| <ul> |
| <li><a href="I_002fO-on-Streams.html#I_002fO-on-Streams">I/O on Streams</a>, which covers the high-level functions |
| that operate on streams, including formatted input and output. |
| |
| <li><a href="Low_002dLevel-I_002fO.html#Low_002dLevel-I_002fO">Low-Level I/O</a>, which covers the basic I/O and control |
| functions on file descriptors. |
| |
| <li><a href="File-System-Interface.html#File-System-Interface">File System Interface</a>, which covers functions for operating on |
| directories and for manipulating file attributes such as access modes |
| and ownership. |
| |
| <li><a href="Pipes-and-FIFOs.html#Pipes-and-FIFOs">Pipes and FIFOs</a>, which includes information on the basic interprocess |
| communication facilities. |
| |
| <li><a href="Sockets.html#Sockets">Sockets</a>, which covers a more complicated interprocess communication |
| facility with support for networking. |
| |
| <li><a href="Low_002dLevel-Terminal-Interface.html#Low_002dLevel-Terminal-Interface">Low-Level Terminal Interface</a>, which covers functions for changing |
| how input and output to terminals or other serial devices are processed. |
| </ul> |
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| <li><a accesskey="1" href="I_002fO-Concepts.html#I_002fO-Concepts">I/O Concepts</a>: Some basic information and terminology. |
| <li><a accesskey="2" href="File-Names.html#File-Names">File Names</a>: How to refer to a file. |
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