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AIX Version 4.3 Base Operating System and Extensions Technical Reference, Volume 1

ptsname Subroutine


Returns the name of a pseudo-terminal device.


Standard C Library (libc.a)


#include <stdlib.h>
char *ptsname (FileDescriptor)
int FileDescriptor


The ptsname subroutine gets the path name of the slave pseudo-terminal associated with the master pseudo-terminal device defined by the FileDescriptor parameter.


FileDescriptor Specifies the file descriptor of the master pseudo-terminal device

Return Values

The ptsname subroutine returns a pointer to a string containing the null-terminated path name of the pseudo-terminal device associated with the file descriptor specified by the FileDescriptor parameter. A null pointer is returned and the errno global variable is set to indicate the error if the file descriptor does not describe a pseudo-terminal device in the /dev directory.


/dev/* Terminal device special files.

Related Information

The ttyname subroutine.

The Input and Output Handling Programmer's Overview in AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.

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