/etc/profile配置环境变量

[root@localhost ~]# tail /etc/profile

#JDK1.8
export JAVA_HOME=/usr/jdk1.8.0_211
export PATH=$PATH:$JAVA_HOME/bin

#mongodb4.0.9
export MONGODB_HOME=/usr/local/mongodb4.0.9  
export PATH=$PATH:$MONGODB_HOME/bin