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Unix

Unix
Which of the following commands is used to summarize the disk usage?

fdisk
chkdsk
None of these
du
disk

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Unix
The command used to remove the directory is;

None of these
remove
rmdir
rd
rdir

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Unix
Which command is used with vi editor scroll half page backward?

[Control-c]
None of these
[Control - u]
[Control -P]
[Control-d]

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Unix
The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is:

744
755
555

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Unix
Which of the following commands is used to identify the type of file by context?

file
more
cat
ls

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Unix
The command that can be used to restrict incoming messages to a user is

None of these
mesg
sleep
grep
halt

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