Using awk does no operation, just an empty line, no version or usage information. Ctrl+C returns to commandline '#'
Target machine: Linux fritz.fonwlan.box 2.6.32.41 #2 Fri Apr 13 13:09:44 CEST 2012 mips(el) GNU/Linux
Please read: http://busybox.net/FAQ.html#emu
Can't reproduce this.