linux添加环境变量
输入vim /etc/profile
配置环境变量
export JAVA_HOME=/usr/lib/javaweb/jdk/javajdk
export JRE_HOME=/usr/lib/javaweb/jdk/javajdk/jre
export NGINX_HOME=/usr/local/nginx02
export FFMPEG=/usr/local/ffmpeg
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$PATH:$FFMPEG/bin:$NGINX_HOME/sbin:$JAVA_HOME/bin:$JRE_HOME/bin
输入source
source /etc/profile