Mac电脑环境变量.bash_profile内容
# java
JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_191.jdk/Contents/Home"
PATH=$JAVA_HOME/bin:$PATH:.
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH
# maven
export M2_HOME="/Users/用户名/Desktop/java/apache-maven-3.6.3"
export PATH="$M2_HOME/bin:$PATH"
#mysql
export MYSQL_HOME=/usr/local/mysql
export PATH=$PATH:$MYSQL_HOME/bin
#ll
alias ll='ls -alF’
生效文件
source ~/.bash_profile