Generate the path name of the current controlling terminal
#include <stdio.h> char * ctermid( char * s );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The ctermid() function generates a string that contains the path name of the current controlling terminal for the calling process.
A pointer to the path name of the controlling terminal, or a pointer to a null string if the function can't locate the controlling terminal.
#include <stdio.h> #include <stdlib.h> int main( void ) { printf( "Controlling terminal is %s\n", ctermid( NULL ) ); return EXIT_SUCCESS; }
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | Read the Caveats |
The ctermid() function isn't thread-safe if the s argument is NULL.