diff -urN busybox-0.60.1/tee.c busybox-0.60.1.new/tee.c
--- busybox-0.60.1/tee.c	Wed Feb 14 22:23:06 2001
+++ busybox-0.60.1.new/tee.c	Tue Aug 28 21:55:10 2001
@@ -52,6 +52,7 @@
 		}
 	}
 
+	setvbuf(stdout, NULL, _IONBF, 0);
 	while ((c = getchar()) != EOF)
 		for (i = 0; i < nfiles; i++)
 			putc(c, files[i]);