安装运行 scala

⼀、安装与运⾏scala

检查java环境

1、将scala压缩包复制到/opt⽬录下

[root@linux-74385 ~]# cp /public/software/bigdata/scala-2.12.16.tgz /opt/

2、将Scala 的压缩包解压到 /usr/local ⽬录

[root@linux-74385 opt]# tar -zxf /opt/scala-2.12.16.tgz -C /usr/local/

3、将 scala-2.12.16 ⽬录的所属⽤户和⽤户组改成 root

[root@linux-74385 local]# chown -R root:root /usr/local/scala-2.12.16/

4、配置Scala环境变量，向 /etc/profile ⽂件添加如下内容：

export SCALA_HOME=/usr/local/scala-2.12.16
export PATH=$PATH:$SCALA_HOME/bin

5、运⾏scala

[root@linux-84750 local]# vim /etc/profile
[root@linux-84750 local]# source /etc/profile
[root@linux-84750 local]# scala

scala> var a = 10
a: Int = 10

scala> var b = 20
b: Int = 20

scala> var c = a + b
c: Int = 30

scala> :quit