dear linaro,

I want to flash my pandaboard with SD card  using

./install-binaries-4.0.4.sh /dev/sdX2
but occer error: trap: 22: ERR: bad trap
how can I solve this problem? 
Thank you !

# Get graphics binaries
   $ wget http://people.linaro.org/~vishalbhoj/install-binaries-4.0.4.sh
   $ chmod a+x install-binaries-4.0.4.sh
   $ ./install-binaries-4.0.4.sh /dev/sdX2 "device node of system partition"