--- /dev/null
+// +build linux
+// +build !appengine,!ppc64,!ppc64le
+
+package isatty
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+const ioctlReadTermios = syscall.TCGETS
+
+// IsTerminal return true if the file descriptor is terminal.
+func IsTerminal(fd uintptr) bool {
+ var termios syscall.Termios
+ _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
+ return err == 0
+}