$1.$ Joey wants to execute myscript.txt $3$ hours from now; which command line does this?

Group of answer choices

echo "date $>>/$home$/$student$/$myjob$.$txt$"|$ at now $+3$min

at now $+3$hours $|$ myscript

atm myscript.txt in $3$ hour

at $-$b date $+3$hours myscript

$2.$ The crond daemon reads multiple configuration files: one per user and a set of system$-$wide files. Each user has a personal file which they can edit with

Group of answer choices

crontab $-$l

crontab filename

crontab $-$r

crontab $-$e

$3.$ What would be the crontab entry for: at midnight on the first day$-$of$-$month, every other month?

Group of answer choices

$0121*/21$

$001*/2*$

$0011/2*$

$**/2*$

$4.$ The fields in the crontab file appear in the following order:

A B C D E F

Referencing the above field order.

Choose all that apply.

Group of answer choices

Fri is a valid value for $\text{'}$E$\text{'}$

$*/10$ is valid for A

$*/10$ is valid for B

$31$ is a valid value for C