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Unix

Unix
Which of the following signs is used to back up over typing errors in vi?

@
$
None of these
!
#

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

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

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Unix
Which option is used with the chmod command recursively to all files and sub-directories in a directory?

#NAME?
-R
None of these
-1

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Unix
Which of the following is not a filter?

sort
grep
None of these
wc

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Unix
You can append to a file instead of overwriting by using the

None of these
< symbols
>> symbols
> symbols

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Unix
Which command is used to display the characteristics of a process?

du
ps
pid
au

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