前言

弄了一下终于成功装上了，这里对此进行一下总结

安装虚拟机

VMware虚拟机安装Ubuntu（超详细图文教程）_vmware安装ubuntu-CSDN博客https://blog.csdn.net/qq_43374681/article/details/129248167Download Ubuntu Desktop | Download | Ubuntuhttps://ubuntu.com/download/desktop安装redhat虚拟机_怎么安装redhat的虚拟机-CSDN博客https://blog.csdn.net/weixin_64066303/article/details/130287039?spm=1001.2014.3001.5501有了前面安装红帽的经验，我相信Ubuntu的安装是得心应手了。

安装Java

Ubuntu下安装Java_ubuntu安装java-CSDN博客https://blog.csdn.net/JqlScala/article/details/133462691直接可以指令安装

更新所有软件包

sudo apt update

 安装默认Java运行时环境（JRE）

 sudo apt install default-jre

 安装Java开发工具包（JDK）

 sudo apt install default-jdk

 验证是否安装成功

root@feng-virtual-machine:~# java -version
openjdk version "11.0.22" 2024-01-16
OpenJDK Runtime Environment (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1)
OpenJDK 64-Bit Server VM (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1, mixed mode, sharing)

安装Scala

All Available Versions | The Scala Programming Language (scala-lang.org)https://www.scala-lang.org/download/all.html（Spark）学习进度十五（虚拟机（ubuntu）安装scala和使用） - 细胞何 - 博客园 (cnblogs.com)https://www.cnblogs.com/hwh000/p/12310651.html

 然后按照他的步骤，解压和配置环境。

root@feng-virtual-machine:~# scala -version
Scala code runner version 2.11.8 -- Copyright 2002-2016, LAMP/EPFL

但是结果出现了

root@feng-virtual-machine:/usr/local/scala# ./bin/scala
Exception in thread "main" java.lang.NoClassDefFoundError: javax/script/Compilable
        at scala.tools.nsc.interpreter.ILoop.createInterpreter(ILoop.scala:118)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:911)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
        at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)
        at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)

./bin/scala出错（Exception in thread “main“java. lang . NoClassDefFoundError: javax/script/Compilable）_exception in thread "main" java.lang.noclassdeffou-CSDN博客https://blog.csdn.net/weixin_52350007/article/details/120569898推测是版本不兼容的问题，然后我找到了一个选择版本的

JDK Compatibility | Scala Documentation (scala-lang.org)https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html

 因为JDK显示是11，之后我安装了2.11.12版本的Scala还是失败了，然后安装3.0.0的没有明显的下载文件，只有一个GitHub的地址。

所以我选择下载2.13.0的版本。

按照同样的方法结果又可以了。

root@feng-virtual-machine:/usr/local/scala/bin# scala
Welcome to Scala 2.13.0 (OpenJDK 64-Bit Server VM, Java 11.0.22).
Type in expressions for evaluation. Or try :help.

scala> println("Hello World!")
Hello World!

scala> 

虽然是出现了一个警告，但是还是可以运行。

root@feng-virtual-machine:~# cd /usr/local/scala
root@feng-virtual-machine:/usr/local/scala# sudo mkdir mycode
root@feng-virtual-machine:/usr/local/scala# cd ./mycode
root@feng-virtual-machine:/usr/local/scala/mycode# ls
root@feng-virtual-machine:/usr/local/scala/mycode# sudo vim HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
warning: there was one deprecation warning (since 2.13.0); re-run with -deprecation for details
one warning found
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scala

object HelloWorld{
  def main(args: Array[String]){
    println("Hello World!")
  }
}
root@feng-virtual-machine:/usr/local/scala/mycode# 

 按要求加上deprecation参数，显示该语法被弃用了。

root@feng-virtual-machine:/usr/local/scala/mycode# scalac -deprecation HelloWorld.scala
HelloWorld.scala:3: warning: procedure syntax is deprecated: instead, add `: Unit =` to explicitly declare `main`'s return type
  def main(args: Array[String]){
                               ^
one warning found

 按照要求修改之后就可以了,添加` :Unit=`

root@feng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scala
object HelloWorld{
  def main(args: Array[String]): Unit={
    println("Hello World!")
  }
}
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
root@feng-virtual-machine:/usr/local/scala/mycode# 

FinalShell

FinalShell官网 (hostbuf.com)https://www.hostbuf.com/这里还有一个软件，感兴趣的小伙伴可以尝试一下，在windows系统下连接Linux的虚拟机。

其中“名称”是自己起，“主机”是用ifconfig指令查看，“端口”默认是22，认证是root，密码就是root的密码。密码不知道可以设置一下。

【ubuntu】设置root用户密码_ubuntu设置root用户密码-CSDN博客https://blog.csdn.net/weixin_43500200/article/details/131118075我的是inet 192.168.92.130

root@feng-virtual-machine:~# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.92.130  netmask 255.255.255.0  broadcast 192.168.92.255
        inet6 fe80::5c97:a5d8:e86f:ce76  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:5f:3c:62  txqueuelen 1000  (以太网)
        RX packets 279948  bytes 161217845 (161.2 MB)
        RX errors 42  dropped 42  overruns 0  frame 0
        TX packets 385434  bytes 102925217 (102.9 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (本地环回)
        RX packets 7077  bytes 854481 (854.4 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7077  bytes 854481 (854.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

 当然输入密码的时候，密码不会回显。

root@feng-virtual-machine:~# sudo passwd root
新的密码： 
重新输入新的密码： 
passwd：已成功更新密码
root@feng-virtual-machine:~#