mac下安装系统

1.maven

vim ~/.bash_profile

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home
export MAVEN_HOME=/Users/admino/Documents/tools/maven/apache-maven-3.9.1
export CLASS_PATH=.:$JAVA_HOME/lib
export PATH=.:$PATH:$JAVA_HOME/bin:$MAVEN_HOME/bin

生效

source ~/.bash_profile

如果退出当前终端，命令失效了，则

vim ~/.bashrc

source ~/.bashrc