题目内容

Dear Mum,Thanks for your email. I'm really 1 I haven't written before now. I 2 a fantastic time in Germany. The university is great, but3here is 4expensive for me and I've5nearly all my money. Can you 6me some money, please? I 7 I'll 8 you back when I come home. Next week 9to get a job. Then perhaps I can 10some money for next term. But until then I need a bit more to pay my room. Thanks a lot, Mum!Love,Caroline

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使用ls命令查看目录内容时,ls -al表示的是?

A. 显示当前目录内容
B. 以长格式显示当前目录中隐藏文件的内容。
C. 以长格式显示当前目录内容。
D. 以长格式显示当前目录内容,并显示隐藏文件内容。

配置文件通常保存在哪个目录下面?

A. /etc
B. /usr
C. /var
D. /root

使用mkdir建立子目录时,如果同时需要创建父目录,则使用下面哪个选项?

A. -r
B. -c
C. -p
D. -a

要递归的删除目录abc,使用下面哪个命令?

A. rm -f abc
B. rm -r abc
C. rm -rf abc
D. rm -re abc

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