SURPRISE SURPRISE If you do not have wget installed, alsa-info.sh will overwrite itself with a NULL Around line 300 where tests for existence begin add . search for and after the next line, add #Run checks to make sure the programs we need are installed. which wget if [ $? !=0 ]; then echo "This $0 script requires prerequisite wget to be installed!" echo "Install it and retry." exit 16 fi Do you need me to create a new bug report.