minix/commands/simple/tty.c
2009-11-09 10:26:00 +00:00

30 lines
646 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>
_PROTOTYPE(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);
}