Dos and Linux Operating Systems Set 9

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Which Linux command list the contents of parent directory?

  

    (A) "ls ~"

    (B) "ls */"

    (C) "ls /"

    (D) "ls .. /"

ls .. /

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What is use of ?who? command in Linux?

  

    (A) login user

    (B) logout user

    (C) login password

    (D) logout password

login user

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Which command is used to hide the file?

  

    (A) attrib -h filename

    (B) attrib +h filename

    (C) attrib /h filename

    (D) attrib h filename

attrib +h filename

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Which command is used to release the read only permission?

  

    (A) attrib -r filename

    (B) attrib +r filename

    (C) attrib /r filename

    (D) attrib r filename

attrib -r filename

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Write the Linux command to remove all the permission to the user and group on the directory 'software'?

  

    (A) chmod ug - rwx software

    (B) chmod ug - a software

    (C) chmod ug - A software

    (D) chmod ug - Rwx software

chmod ug - rwx software

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