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su - root:表示人以root身份登录 just like login as root, then the shell is login shell, which mean it will expericene a login process, usually .bash_profile and .bashrc will be sourced su root:表示与root建立一个链接，通过root执行命令 like you open an interactive shell in root name, then only .bashrc will be sourced. (责任编辑：IT) |