step1:# or run: # sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA300B7755AFCFAE wget -qO - https://typora.io/linux/public-key.asc | sudo apt-key add - step2:# add Typora's repository

1.) Run this command to add the ppa repository to your system:sudo add-apt-repository ppa:clipgrab-team/ppa 2.) Update the package lists to make it available:sudo apt-get update 3.) Finally install i

1.修改环境变量sudo vi ~/.bashrc 在文件末尾追加下面内容：#set oracle jdk environment export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_144 ## 这里要注意目录要换成自己解压的jdk 目录 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:$