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Unix

Unix
Which of the following is invalid filename?

None of these
TRY
trial
my .file

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Unix
Which command is used to sort the lines of data in a file in alphabetical order?

sort
None of these
sort -r
sh
st

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Unix
Which of the following commands is used to save the output of the who command in a file named user.lst, as well as display it?

who >> user.lst
who | tee user.lst
who < user.lste
who > user.lst
None of these

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Unix
Which of the following special shell variables is used to process number of the last background job?

$!
$0
$#
$*

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Unix
Which of the following commands can be used to get information about all users who are currently logged into the system?

which
who am i
1 /u
None of these
who

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

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

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