: ${LCD4LINUX_DRV_PORT:='ttyS0'} : ${LCD4LINUX_DRV_SPEED:='115200'} : ${LCD4LINUX_DRV_MODEL:='KIT240-7'} echo " Driver 'EA232graphic'" echo " Model '$LCD4LINUX_DRV_MODEL'" echo " Port '/dev/$LCD4LINUX_DRV_PORT'" echo " Speed '$LCD4LINUX_DRV_SPEED'" if [ -n "$LCD4LINUX_DRV_CONTRAST" ] then echo " Contrast '$LCD4LINUX_DRV_CONTRAST'" fi