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64. Pseudoterminals > BSD Pseudoterminals

BSD Pseudoterminals

For most of this chapter, we have focused on UNIX 98 pseudoterminals, since this is the style of pseudoterminal that is standardized in SUSv3 and thus should be used in all new programs. However, we may sometimes encounter BSD pseudoterminals in older applications or when porting programs to Linux from other UNIX implementations. Therefore, we now consider the details of BSD pseudoterminals.

Note

The use of BSD pseudoterminals is deprecated on Linux. From Linux 2.6.4 onward, BSD pseudoterminal support is an optional kernel component that can be configured via the CONFIG_LEGACY_PTYS option.


  

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