查看所有文件（包括隐藏文件）：ll -a
创建文件：touch [filename]
在不注销重新登陆的情况下使修改的配置文件生效：source [filename]
在用户目录下的隐藏文件.bashrc中配置环境变量例如export JAVA_HOME=/JAVA/jdk1.8.0_190
Created
March 18, 2019 12:57
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linux常用
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