Updated: April 19, 2023 |
Get a fully qualified pathname for a file
#include <unistd.h> char *ttyname( int filedes );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The ttyname() function returns a pointer to a static buffer that contains a fully qualified pathname associated with the file associated with filedes.
A pointer to the pathname for filedes, or NULL if an error occurred (errno is set).
/* * The following program prints out the name * of the terminal associated with stdin. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main( void ) { if( isatty( 0 ) ) { printf( "%s\n", ttyname( 0 ) ); } else { printf( "\n" ); } return EXIT_SUCCESS; }
Safety: | |
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Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | No |