Tag: operating systems

Questions Related to operating systems

which of the following shells support float and array data types?
technology operating systems

  1. Korn

  2. Bash

  3. Bourne

  4. None of these

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Correct Option: A

which of the following are special systen parameters that contain information abt current processes? (select more than one answer)
technology operating systems

  1. ?

  2. !

  3. $

  4. #

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Correct Option: A,B,C

What is the output of the last echo command executed on a bash shell? $ bash $ export a=aaagggccc $ echo ${a/g/b}
technology operating systems

  1. aaagggccc/g/b

  2. aaabbbccc

  3. aaabggccc

  4. a/g/b

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Correct Option: C

Which unix text processing tools will help me to replace all the instances of "hi india" to "HiIndia"?
technology operating systems

  1. awk

  2. sed

  3. perl

  4. emac

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Correct Option: B

I opened a text file in vi editor and typed the following command while in escape mode. :3 s/abc/xyz/
technology operating systems

  1. It looks for the all the abc strings in line 3 and replaces them to xyz.

  2. It looks for the first abc string in the first 3 lines and replaces to xyz.

  3. It looks for the first abc string in line 3 and replaces to xyz.

  4. It looks for the first 3 abc string in the file and replaces them to xyz.

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Correct Option: C

What key combination is typically used to interrupt running programs?
technology operating systems

  1. CTRL-E

  2. CTRL-C

  3. CTRL-D

  4. CTRL-I

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Correct Option: B

What symbol is used to "pipe" two commands together?
technology operating systems

  1. :

  2. ||

  3. !

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Correct Option: D

What command would you use to find all files under the current directory owned by the user foo?
technology operating systems

  1. find ./ -type file -user foo

  2. find ./ -type f -owner foo

  3. find ./ -type f -o foo

  4. find ./ -type f -user foo

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Correct Option: D

If no one has physical access to the computer, the root password need not be changed.
technology operating systems

  1. True

  2. False

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Correct Option: B

What would be the correct syntax to mount the share 'data' from Windows machine 'jupiter'?
technology operating systems

  1. mntsmb -s //jupiter/data /mnt/Data

  2. mount -t smbfs /mnt/Data //jupiter/data

  3. mount -t smbfs //jupiter/data /mnt/Data

  4. smbfs -mount //jupiter/data /mnt/Data

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Correct Option: C