Answer / isha

allows users to run programs with the security privileges
of another user (normally the superuser).It is an
abbreviation for "switchuser do" (as in, do a command with
another user's privileges). By default, sudo will prompt
for a user password but it may be configured to require the
root password, or require it only once per pseudo terminal,
or no password at all.[3] Sudo is able to log each command
run and in some cases has completely supplanted the
superuser login for administrative tasks

Which Command is Used for temprary switch User?

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The command grep first second third /usr/you/myfile a) prints lines containing the words first, second or third from the file /usr/you/myfile b) searches for lines containing the pattern first in the files second, third, and /usr/you/myfile and prints them c) searches the files /usr/you/myfiel and third for lines containing the words first or second and prints them d) replaces the word first with the word second in the files third and /usr/you/myfile e) None of the above

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distinguish between multi-tasking,multi-user,multi- processing and time sharing?

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In UNIX, what is the command to edit contents of the file?

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