一:Java环境的配置:
1安装Java:打开终端,新建目录:mkdir /usr/lib/java
2把下载好的jdk文件移到刚刚创建的目录中 mv /root/Downloads/jdk-8u131-linux-x64.tar.gz /usr/lib/java
3解压jdk文件:cd /usr/lib/java
tar -xvf jdk-8u131-linux-x64.tar.gz
4修改环境变量: vim ~/.bashrc在最后加上:
export JAVA_HOME=/usr/lib/java/jdk1.8.0_111
export JRE_HOME=${JAVA_HOME}/jre
export CLASS_PATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
使之生效:source ~/.bashrc
5在终端显示java版本: java -version
坑:下载Java jdk时,自己的电脑是64位的,否则会报找不到路径的错误,x86是32位,x64是64位
二:安装ssh:
只需一条命令:sudo apt-get install ssh
坑:会报这种错:
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
解决方案:sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock
报错的原因是资源的互锁,需要先删掉