打开
vi /etc/profile
查看...修改...保存
重启
source /etc/profile
eg:
#JAVA_HOME Environment
export JAVA_HOME=/usr/local/java/jdk1.8.0_301
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CATALINA_HOME=/usr/local/apache-tomcat-10.0.13
