30 lines
632 B
C
30 lines
632 B
C
/* tty.c - Return tty name Author: Freeman P. Pascal IV */
|
|
|
|
/* Minor changes to make tty conform to POSIX1003.2 Draft10
|
|
Thomas Brupbacher (tobr@mw.lpc.ethz.ch) */
|
|
|
|
#include <sys/types.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
|
|
int main(int argc, char **argv);
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
char *tty_name;
|
|
|
|
tty_name = ttyname(STDIN_FILENO);
|
|
if ((argc == 2) && (!strcmp(argv[1], "-s")))
|
|
/* Do nothing - shhh! we're in silent mode */ ;
|
|
else
|
|
puts((tty_name != NULL) ? tty_name : "not a tty");
|
|
|
|
if (isatty(STDIN_FILENO) == 0)
|
|
return(1);
|
|
else
|
|
return(0);
|
|
}
|