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Unix

Unix
Which of the following command is used to go to home directory?

cd HOME.
cd
cd..
cd/
None of these

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Unix
The second set of the three permissions (r-) indicates that

owner has read permission only
other has read permission only
group has write permission only
group has read permission only

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Unix
Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?

rm all
rm *.*
rm *
rm -r *
None of these

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Unix
Which of the following commands is used to list contents of directories?

dir
ls
lp
tar

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Unix
Which of the following keys is used to overstrike a whole line?

u
v
C
None of these
R

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Unix
Which of the following commands is used to display the directory attributes rather than its contents?

ls -l
ls -x
ls -l -d
ls -F

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