post_install() {
default_file=/etc/default/concordium-mainnet-node-collectorifgrep-qs __NODE_NAME__ $default_file;then
node_name=concordium-$(openssl rand -hex 4)sed-i"s/__NODE_NAME__/$node_name/"$default_fileecho -e"\033[0;32m Concordium node name set to '$node_name' You can change it in$default_file\033[0m"fi}