题目内容
（请给出正确答案）
A.你没有授权执行这个程序
B.prog是不可执行的
C.路径/home/lisa没有包括在PATH环境变量中
D.你需要打入./prog去执行此程序
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“前目录/home/lisa下有一个shell脚本prog.它的权限是rwxr-xr-x.如果在命令行运行prog,得到"&”相关的问题
A.PATH=$PATH:$HOME/bin
B.PATH=$PATH:/$HOME/bin
C.PATH=$PATH:$HOME/$bin
D.PATH=$PATH:/$HOME/$bin
The first time that Lisa went there, she discovered that she hadn't brought enough money. At first she was worried, but then she remembered that she had brought her checkbook with her and went to the bank to cash a check. The bank teller had never seen Lisa before, but he knew that a lot of people were stealing checkbooks and using them. So he said to her, "Can you identify yourself, please？"
Lisa had never been asked to do this in her home town, so she looked puzzled for a moment; but then she took her mirror out of her handbag, looked at it, and then said happily. "Yes, it is me. "
Where did Lisa go for her vacation？
A．In a small town.
B．In a large city.
C．In the mountains.
D．In a village.
A.cd /home/tmp
B.rm /home/tmp
C.rmdir /home/tmp
D.rm -r /home/tmp
在/home/stud1/wang目录下有一文件file，使用()。可实现在后台执行命令，此命令将file文件中的内容输出到fil
A.catfile>file.copy
B.catfilefile.copy
C.&catfilefile.copy
D.&catfile>file.copy
A.cat file＞filE.copy
B.cat filefilE.copy
C.&cat filefilE.copy
D.&cat file＞filE.copy
A.pshell.sh/home/linux
B.mvshell.sh/home/linux
C.lsshell.sh/home/linux/she ll.sh
D.mv/root/shell.sh/home/linux/shell.sh
A．cat file＞filE.copy
B．cat filefilE.copy
C．&cat filefilE.copy
D．&cat file＞filE.copy
A.某文件系统未创建快照前，数据修改将覆盖原有数据。
B.当快照创建成功以后，会在文件系统的根目录下有一个特殊的快照目录，该目录下包含了这个文件系统的所有快照。
C.当为文件系统创建快照时，需要拷贝该文件系统的根节点及其所有树目录节点并保存，形成了一个文件系统的快照。
D.刚创建的快照不包含任何实际的数据，只有指向主文件系统数据的指针。
A.在home目录创建一个a_zhous目录和文件
B.在home目录创建一个a_zhous目录
C.在home目录创建一个mkdir目录
D.在home目录创建一个a_zhous文件
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