scala 安装

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scala 安装

前提：安装jdk8以上，查看如下：

[root@localhost ~]# java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)

下载：https://www.scala-lang.org/download/

1. 解压缩文件包，可将其移动至/usr/local/share下
   cd  /downloaddir
   mv  scala-2.12.8/  scala
   mv scala /usr/local/share/
2. 修改环境变量，修改配置文件profile:
   vim /etc/profile
   加入
   export PATH=$PATH:/usr/local/share/scala/bin
3. 重置终端
4. 输入scala，查看安装

   [root@localhost ~]# scala
   Welcome to Scala 2.12.8 (OpenJDK 64-Bit Server VM, Java 1.8.0_191).
   Type in expressions for evaluation. Or try :help.

   scala> 

5. ctrl-z 退出scala