单选题Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?（）A :r/^#//gB :1,$ s/^#//gC :sed s/^#//gD :sub s/^#//g

题目
单选题
Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?（）
A

:r/^#//g

B

:1,$ s/^#//g

C

:sed s/^#//g

D

:sub s/^#//g

相似考题

1.A technician needs to replace a computer’s hard drive. Which of the following should thetechnician do FIRST?()A. Remove network connectionsB. Remove the RAMC. Self ground on the computer caseD. Disconnect power to PC

2.The system administrator has requested that all setuid／setgid bits be removed from executables in application filesystem. Which command will achieve this?()A. chmod -R o-s /applicationB. chmod -R ug-s /applicationC. chmod -R -s -o /applicationD. chmod -R -s -ug /application

3.Operator needs to remove all leading comments from shell.script file. Which of the following vi sub－command can achieve this?()A. :r/^#//gB. :1,$ s/^#//gC. :sed s/^#//gD. :sub s/^#//g

4.Which of the following can an operator use to shutdown a system into single－user mode?()A.shutdown -dB.shutdown -sC.shutdown -mD.shutdown -Fr -s 1

更多“单选题Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?（）A :r/^#//gB :1,$ s/^#//gC :sed s/^#//gD :sub s/^#//g”相关问题

  • 第1题：

    After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）

    A. Use refresh -s sshd

    B. Use init.sshd /etc/rc.ssh

    C. Use /usr/sbin/sshd -restart

    D. Use stopsrc -s sshd and then startsrc -s sshd


    参考答案：D

  • 第2题：

    给定关系R（A,B,C,D,E）与S（A,B,C,F,G），那么与表达式等价的SQL语句如下：select（请作答此空）from R,S where（ ）;

    A.R.A，R.B，R.E，S.C，G
    B.R.A，R.B，D，F，G
    C.R.A，R.B，R.D，S.C，F
    D.R.A，R.B，R.D，S.C，G

    答案：B
    解析：
    本题考查关系代数运算与SQL语言的对应关系。注意本题中R与S是做自然联接操作，操作时会将R与S中相同字段名做等值联接，并将结果集去重复。所以R与S自然联接后的结果包括以下属性：R.A，R.B，R.C，D，E，F，G。关系代数选择条件为“1<6”，即R.A

  • 第3题：

    After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）

    • A、Use refresh -s sshd
    • B、Use init.sshd /etc/rc.ssh
    • C、Use /usr/sbin/sshd -restart
    • D、Use stopsrc -s sshd and then startsrc -s sshd

    正确答案:D

  • 第4题：

    Which of the following methods effectively removes data from a hard drive prior to disposal？（）

    • A、Use the remove hardware OS feature
    • B、Formatting the hard drive
    • C、Physical destruction
    • D、Degauss the drive
    • E、Overwriting data with 1s and 0s by utilizing software

    正确答案:C,E

  • 第5题：

    A System p administrator wishes to create a template file to monitor performance. Having found a template from January，  how can the administrator create a July template without destroying the original January version （）

    • A、vi jan.template ：%s/Jan/Jul/g ：w jul.template ：q!
    • B、cat jan.template sed s：Jan：Jul： > jan.template
    • C、vi jan.template ：1，$ replace Jan Jul [Esc] ZZ
    • D、vi jan.template ：w jul.template ：1，$ s/Jan/Jul/g ：q!

    正确答案:A

  • 第6题：

    How can a directory be excluded from a mksysb backup of the following？（）

    • A、Put an entry in the /etc/exclude.rootvg file
    • B、Put an entry in the /etc/mksysb.exclude file
    • C、Remove the directory’s entry from the mksysb /image.data file
    • D、Remove the directory’s entry from the /var/adm/ras/bosinst.data file

    正确答案:A

  • 第7题：

    Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?（）

    • A、:r/^#//g
    • B、:1,$ s/^#//g
    • C、:sed s/^#//g
    • D、:sub s/^#//g

    正确答案:D

  • 第8题：

    An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?（）

    • A、lslp -a
    • B、qchk -A
    • C、enq -s ALL
    • D、lpstat -p ALL

    正确答案:B

  • 第9题：

    多选题
    Which of the following methods effectively removes data from a hard drive prior to disposal？（）
    A

    Use the remove hardware OS feature

    B

    Formatting the hard drive

    C

    Physical destruction

    D

    Degauss the drive

    E

    Overwriting data with 1s and 0s by utilizing software


    正确答案： C,E
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following can an operator use to shutdown a system into single-user mode?（）
    A

    shutdown -d

    B

    shutdown -s

    C

    shutdown -m

    D

    shutdown -Fr -s 1


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    According to the passage, which of the following statements is TRUE?
    A

    Chokwe developed the app all by himself.

    B

    People can buy t is app from the online store.

    C

    His mother's car was once damaged over a pothole.

    D

    The app works by using the city's 911 call system.


    正确答案： C
    解析：

  • 第12题：

    单选题
    The system administrator has requested that all setuid/setgid bits be removed from executables in application filesystem. Which command will achieve this?（）
    A

    chmod -R o-s /application

    B

    chmod -R ug-s /application

    C

    chmod -R -s -o /application

    D

    chmod -R -s -ug /application


    正确答案： B
    解析： 暂无解析

  • 第13题：

    The following output occurs on Router R2. Which of the following statements can be confirmed as true based on the output from R2?()R2 show ip policyInterface Route mapFa0／0 RM1Fa0／1 RM2S0／0／0 RM3

    A. R2 will forward all packets that enter Fa0/0 per the PBR configuration.

    B. R2 will use route map RM2 when determining how to forward packets that exit interface Fa0/1.

    C. R2 will consider using PBR for all packets exiting S0/0 /0 per route map RM3.

    D. R2 will consider using PBR for all packets entering S0/0/0 per route map RM3.


    参考答案：D

  • 第14题：

    以下哪条vi命令能将文档5-20行间出现的abc替换成为cba（）。

    • A、1，$s/abc/cba/g
    • B、5，20/abc/cba/g
    • C、5-20s/abc/cba/g
    • D、5，20s/abc/cba/g

    正确答案:D

  • 第15题：

    EPON系统可以提供上下行对称带宽为（）Gb/S。

    • A、1G
    • B、10G
    • C、2.5G
    • D、1.25G

    正确答案:D

  • 第16题：

    A technician needs to replace a computer’s hard drive. Which of the following should thetechnician do FIRST?（）

    • A、Remove network connections
    • B、Remove the RAM
    • C、Self ground on the computer case
    • D、Disconnect power to PC

    正确答案:D

  • 第17题：

    Which of the following can an operator use to shutdown a system into single-user mode?（）

    • A、shutdown -d
    • B、shutdown -s
    • C、shutdown -m
    • D、shutdown -Fr -s 1

    正确答案:C

  • 第18题：

    How can a directory be excluded from a mksysb backup（）

    • A、Put an entry in the /etc/exclude.rootvg file.
    • B、Put an entry in the /etc/mksysb.exclude file.
    • C、Remove the directory’s entry from the mksysb /image.data file.
    • D、Remove the directory’s entry from the /var/adm/ras/bosinst.data file.

    正确答案:A

  • 第19题：

    The system administrator has requested that all setuid/setgid bits be removed from executables in application filesystem. Which command will achieve this?（）

    • A、chmod -R o-s /application
    • B、chmod -R ug-s /application
    • C、chmod -R -s -o /application
    • D、chmod -R -s -ug /application

    正确答案:B

  • 第20题：

    下列反应中，哪个是表示ΔH=ΔHfA、gB、r（s）的反应？（）

    • A、A、g（A、q）+B、r（A、q）=A、gB、r（s）
    • B、B、2g（s）+B、r2=2A、gB、r（s）
    • C、C、g（s）+1/2B、r2（l）=A、gB、r（s）
    • D、D、g（s）+1/2B、r2（S）=A、gB、r（s）

    正确答案:C

  • 第21题：

    单选题
    When planning to access the on-line documentation from a remote client, which of the following procedures should be performed on the server?（）
    A

    Install and configure the HTTPServer. 

    B

    Add the name(s) of the client(s) to the httplite.conf file. 

    C

    Add the names of any clients expecting to access the documentation to the /etc/hosts file. 

    D

    No action is required.


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Operator needs to remove all leading comments # from shell.script file. Which of the following vi sub-command can achieve this?（）
    A

    :r/^#//g

    B

    :1,$ s/^#//g

    C

    :sed s/^#//g

    D

    :sub s/^#//g


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    After performing a modification on the /etc/ssh/sshd_config file the operator needs to reinitialize the secure shell daemon to enable the new settings. Which of the following is the correct way to achieve this?（）
    A

    Use refresh -s sshd

    B

    Use init.sshd /etc/rc.ssh

    C

    Use /usr/sbin/sshd -restart

    D

    Use stopsrc -s sshd and then startsrc -s sshd


    正确答案： A
    解析： 暂无解析

  • 第24题：

    单选题
    An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?（）
    A

    lslp -a

    B

    qchk -A

    C

    enq -s ALL

    D

    lpstat -p ALL


    正确答案： D
    解析： 暂无解析

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