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Unix

Unix
Which of the following commands is used to rename a file?

rename
ren
mv
remove

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Unix
Which command is used to remove the read permission of the file 'note' from both the group and others?

chmod go-x note
chmod go-r note
chmod go+rw note
chmod go+r note

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Unix
Which of the following command addresses all users who are currently hooked on?

mesg
write
mail
wall

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Unix
Which of the following special shell variables is used to process number of the current shell?

$$
None of these
$*
$!

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Unix
Which of the following commands is used to copy a file wb from the programs directory into a file called wbx in the misc directory?

copy a:programs/wb b:misc/wbx
tar programs/wb misc/wbx
cp programs/wb misc/wbx
copy programs/wb misc/wbx

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Unix
Which of the following files will displayed by this command cat *ch*

catch
All of these
.ch
patch

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