Shulou(Shulou.com)06/01 Report--

This article mainly introduces CentOS7.0 how to install Scala and sun jdk, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Install Scala on centOS7.0 found that the installed cenos7.0 has its own java-openjdk-headle.x86_64, try to see if it is easy to use and find that running .java source program found that the javac command can not be used, so I have to uninstall the jdk that comes with OS to install the jdk that comes with sun.

1. Check the openjdk package that comes with OS first.

[root@mycentos01 bin] # rpm-qa | grep java java-1.7.0-openjdk-1.7.0.512.4.5.5.el7.x86_64

two。 Uninstall related openjdk

[root@mycentos01 bin] # rpm-e-nodeps java-openjdk-headle.x86_64

3. Install jdk under your own sun official website

[root@mycentos01 bin] # tar-zxvf jdk-8u121-linux-x64.tar.gz

4. Install Scala downloaded by yourself

[root@mycentos01 bin] # tar-xzvf scala-2.10.6.tgz

5. Configure your own environment variables

[root@mycentos01 bin] # vim / etc/profile

6. Refresh the configuration file to make the configuration take effect

[root@mycentos01 bin] # source / etc/profile

Enter java-version and scala-version to see the installation and then OK.

Today, I also found a method before centOS7 changed the host name. It didn't work. I don't know why I used the command to write HOSTNAME= "a name what I want my computer called." to the "/ etc/sysconfig/network" file. " It does not work after reboot, and ensures that the input is the correct hostname. Finally, with the tool hostnametcl, it is changed to a static hostname, and the command: "[root@mycentos01 bin] # hostnamectl set-hostname" your computer name you want to set ""

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