当创建另外的用户时不要使用它;否则,只有最新的用户才能够登录。
Don't use it when you create additional users; otherwise, only the most recent user will be able to log in.
因此如果结果为true那么做一些操作,否则的话再看看这个表达式的值是不是,如果是的话做另外一些操作,我想要多少后面就可以跟多少。
So if this is true do something else, true otherwise test and see if this is true, do something else, as many as I like followed by the end.
每行显示一个打开的文件,除非另外指定,否则将显示所有进程打开的所有文件。
One open file is displayed per line and, unless you specify otherwise, all open files from all processes are displayed.
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