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Unix

Unix
Which symbol will be used with grep command to match the pattern pat at the beginning of a line?

$pat
pat^
^pat
pat$

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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 command is used to set the three permissions for all the three categories of users of a file?

None of these
chown
chusr
chgrp
chmod

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

None of these
halt
mesg
sleep
grep

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Unix
Which of the following is invalid filename?

TRY
None of these
my .file
trial

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Unix
Which command is used with vi editor to search a pattern in the forward direction?

/
??
?
//

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