多文件分类和应用环境变量

• 自定义环境变量文件存放目录

  • /usr/local/etc/profile.d:
    1. java_evn.sh

       export JAVA_HOME_7=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home
       export JAVA_HOME_8=/Library/Java/JavaVirtualMachines/openlogic-openjdk-8.jdk/Contents/Home
       export JAVA_HOME=$JAVA_HOME_8
       export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
       export PATH=$PATH:$JAVA_HOME
       

    2. alias_env.sh

       alias pg_start='pg_ctl -D /usr/local/var/postgresql@11 -l /usr/local/var/postgresql@11/server.log start'
       alias pg_stop='pg_ctl -D /usr/local/var/postgresql@11 -l /usr/local/var/postgresql@11/server.log stop'
       

• 修改~/.bash_profile， 写入以下内容

  for i in /usr/local/etc/profile.d/*.sh; do
    if [ -r "$i"  ]; then
       if [ "${-#*i}" != "$-" ]; then
         . "$i"
       else
         "$i" >/dev/null
       fi
    fi
  done
  unset i
  

• 应用环境变量

  source ~/.bash_profile