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C/C++ Source or Header  |  1979-12-31  |  384 b   |  12 lines
  1. /*
  2. ** Return "true" if fd is a device, else "false"
  3. */
  4. #include <stdio.h>
  5.  
  6. isatty(fd) int fd; {
  7.    if(fd >255)
  8.       return(FALSE);
  9.    else
  10.       return(TRUE);
  11.   }
  12.