Which three statements are true concerning the two cron jobs listed?

As root, you enter a crontab command as shown;
[root@FAROUT cron.daily] # crontab -1
*/2 * * * * vmstat
0 0 1 1-5 * iostat
[root@FAROUT cron.daily] #
Which three statements are true concerning the two cron jobs listed?

As root, you enter a crontab command as shown;
[root@FAROUT cron.daily] # crontab -1
*/2 * * * * vmstat
0 0 1 1-5 * iostat
[root@FAROUT cron.daily] #
Which three statements are true concerning the two cron jobs listed?

A.
The iostat command runs at midnight of every day except Sunday.

B.
The vmstat command runs twice per hour.

C.
The vmstat command runs every other hour.

D.
The vmstat command runs every second minute.

E.
All cron job output is sent to the root user’s mall.

F.
All cron job output is sent to /var/log/messages.

G.
The iostat command runs at midnight on the first day of each of the first five months of the year.

Explanation:



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wolfsrudel

wolfsrudel

C, D, E

kendl

kendl

DEG … C and D cannot by together 🙂

Lilacmega

Lilacmega

The answer is D,E,G
=================

Wizard

Wizard

Job definitions are specified in the following format:

minute hour day month day-of-week user command

the output is always sent to the owner’s mail, at the begining says that you execute the command as root so…

D,E,G

Hector

Hector

D, E, G

http://www.unixgeeks.org/security/newbie/unix/cron-1.html

The main config file is normally /etc/crontab.
On a default RedHat install, the crontab will look something like this:

root@pingu # cat /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# ===========================================================================
# .————— minuto (0-59)
# | .———— hora (0-23)
# | | .——— día del mes (1-31)
# | | | .—— mes (1-12) o jan,feb,mar,apr,may,jun,jul… (meses en inglés)
# | | | | .— día de la semana (0-6) (domingo=0 ó 7) o sun,mon,tue,wed,thu,fri,sat (días en inglés)
# | | | | |
# * * * * * comando a ejecutar