sudo /usr/share/arduino/hardware/tools/avrdude  -p atmega328p -c dragon_isp -P usb -e   -Uflash:w:foo.hex:i

avrdude: jtagmkII_setparm(): bad response to set parameter command: RSP_FAILED
avrdude: jtagmkII_getsync(): ISP activation failed, trying debugWire
avrdude: jtagmkII_setparm(): bad response to set parameter command: RSP_NO_TARGET_POWER
avrdude: failed to sync with the AVR Dragon in ISP mode

avrdude done.  Thank you.