单选题Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?（）A :wB :qwC :x!D :we!

题目
单选题
Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?（）
A

:w

B

:qw

C

:x!

D

:we!

相似考题

1.在vi编辑器命令模式下，保存并退出编辑的命令是:『____』。(In the vi editor in command mode, the command of saving and exiting the editor of is『____』.)

2.Which command will resolve the problem shown in the exhibit?()A. user@router> request system configuration rescue saveB. user@router# request system configuration rescue saveC. user@router> file copy current /config/rescue.confD. user@router# file copy current /config/rescue.conf

3.Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?()A. :wB. :qwC. :x!D. :we!

4.Which substitution variable would you use if you want to reuse the variable without prompting the user each time? ()A. &B. ACCEPTC. PROMPTD. &&

更多“单选题Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?（）A :wB :qwC :x!D :we!”相关问题

  • 第1题：

    Which action change the default editor for ALL users on the system from vi to edit（）

    • A、Issue the command： export EDITOR=/usr/bin/edit edit each user .profile to change the EDITOR value to /usr/bin/edit
    • B、Modify /.profile and change the EDITOR variable to /usr/bin/edit
    • C、Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITOR
    • D、Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit

    正确答案:C

  • 第2题：

    Which action changes the default editor for ALL users on the system from vi to edit？（）

    • A、Issue the command：export EDITOR=/usr/bin/edit edit each users .profile to change the EDITOR value to /usr/bin/edit
    • B、Modify /.profile and change the EDITOR variable to /usr/bin/edit
    • C、Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITOR
    • D、Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit

    正确答案:C

  • 第3题：

    Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into a bash initialization file will have bash recognize vi keystrokes after login？（）

    • A、 history-pvi
    • B、 alias emacs=vi
    • C、 HISTCMD=vi
    • D、 set -o vi
    • E、 unset emacs

    正确答案:D

  • 第4题：

    Which command will increase the contiguous free space of a file system without having to add additional partitions？（）

    • A、chfs
    • B、fsck
    • C、chlv
    • D、defragfs

    正确答案:D

  • 第5题：

    Content filtering enables traffic to be permitted or blocked based on inspection of which three types of content?（）(Choose three.)

    • A、MIME pattern
    • B、file extension
    • C、IP spoofing
    • D、POP3
    • E、protocol command

    正确答案:A,B,E

  • 第6题：

    Which is not a valid way of backing up a control file？（）  

    • A、 Backing up the control file to trace
    • B、 Copying the existing control file of the database to the backup location during a hot backup 
    • C、 Copying the existing control file of the database to the backup location during a cold backup
    • D、 Creating a backup control file
    • E、 Using the create controlfile command

    正确答案:B

  • 第7题：

    单选题
    Which is not a valid way of backing up a control file？（）
    A

     Backing up the control file to trace

    B

     Copying the existing control file of the database to the backup location during a hot backup 

    C

     Copying the existing control file of the database to the backup location during a cold backup

    D

     Creating a backup control file

    E

     Using the create controlfile command


    正确答案： E
    解析： 暂无解析

  • 第8题：

    单选题
    Which command will increase the contiguous free space of a file system without having to add additional partitions？（）
    A

    chfs

    B

    fsck

    C

    chlv

    D

    defragfs


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following local files is used to run the date command on the remote machine "Earth" using the following rexec command without request for a password？ rexec Earth date（）。
    A

    ~/ .rhosts

    B

    $HOME/.netrc

    C

    /etc/hosts.equiv

    D

    /etc/security/user


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Many people like the vi text editor but the default bash command line editor recognizes emacs keystrokes. What command entered into a bash initialization file will have bash recognize vi keystrokes after login？（）
    A

     history-pvi

    B

     alias emacs=vi

    C

     HISTCMD=vi

    D

     set -o vi

    E

     unset emacs


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    A user is unable to determine the default system text editor. How can the local administrator assist the user by identifying the default text editor for the system？（）
    A

    Login as the user and run ’echo $ENV’.

    B

    Login as root and run the ’env’ command.

    C

    Login as root and ’cat /etc/environment’.

    D

    Login as the user and run the ’env’ command.


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    Which action changes the default editor for ALL users on the system from vi to edit of the following？（）
    A

    Issue the command：  export EDITOR=/usr/bin/edit

    B

    Modify /.profile and change the EDITOR variable to /usr/bin/edit

    C

    Modify /etc/environment and add  EDITOR=/usr/bin/edit  export EDITOR

    D

    Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Which action changes the default editor for ALL users on the system from vi to edit of the following？（）

    • A、Issue the command：  export EDITOR=/usr/bin/edit
    • B、Modify /.profile and change the EDITOR variable to /usr/bin/edit
    • C、Modify /etc/environment and add  EDITOR=/usr/bin/edit  export EDITOR
    • D、Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit

    正确答案:C

  • 第14题：

    A user is unable to determine the default system text editor. How can the local administrator assist the user by identifying the default text editor for the system？（）

    • A、Login as the user and run ’echo $ENV’.
    • B、Login as root and run the ’env’ command.
    • C、Login as root and ’cat /etc/environment’.
    • D、Login as the user and run the ’env’ command.

    正确答案:B

  • 第15题：

    An administrator has set up serverA and serverB to use the /etc/hosts.equiv file so that applications on serverA can remotely run commands on serverB. Which command will verify if a new user from serverA is trusted on serverB?（）

    • A、As the root user from serverA run the command rhost serverB
    • B、As the root user from serverA run the command rlogin serverB
    • C、As the desired user from serverB run the command rhost serverA
    • D、As the desired user from serverA run the command rlogin serverB

    正确答案:D

  • 第16题：

    An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（）

    • A、/tmp
    • B、/var/preserve
    • C、/var/tmp/$USER
    • D、$HOME/.vi

    正确答案:B

  • 第17题：

    Which substitution variable would you use if you want to reuse the variable without prompting the user each time? （）

    • A、&
    • B、ACCEPT
    • C、PROMPT
    • D、&&

    正确答案:D

  • 第18题：

    Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?（）

    • A、:w
    • B、:qw
    • C、:x!
    • D、:we!

    正确答案:C

  • 第19题：

    单选题
    Which substitution variable would you use if you want to reuse the variable without prompting the user each time? （）
    A

    &

    B

    ACCEPT

    C

    PROMPT

    D

    &&


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which action change the default editor for ALL users on the system from vi to edit（）
    A

    Issue the command： export EDITOR=/usr/bin/edit edit each user .profile to change the EDITOR value to /usr/bin/edit

    B

    Modify /.profile and change the EDITOR variable to /usr/bin/edit

    C

    Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITOR

    D

    Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（）
    A

    /tmp

    B

    /var/preserve

    C

    /var/tmp/$USER

    D

    $HOME/.vi


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    An administrator has set up serverA and serverB to use the /etc/hosts.equiv file so that applications on serverA can remotely run commands on serverB. Which command will verify if a new user from serverA is trusted on serverB?（）
    A

    As the root user from serverA run the command rhost serverB

    B

    As the root user from serverA run the command rlogin serverB

    C

    As the desired user from serverB run the command rhost serverA

    D

    As the desired user from serverA run the command rlogin serverB


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which action changes the default editor for ALL users on the system from vi to edit？（）
    A

    Issue the command：export EDITOR=/usr/bin/edit edit each users .profile to change the EDITOR value to /usr/bin/edit

    B

    Modify /.profile and change the EDITOR variable to /usr/bin/edit

    C

    Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITOR

    D

    Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit


    正确答案： A
    解析： 暂无解析

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