cron

Question 1

where is crontab located

Answer 1

/etc/crontab

Question 2

what does cat crontab show?

Answer 2

A list of all scheduled jobs

Question 3

how is time displayed in crontab?

Answer 3

minute, hour, day, month, day of week

Question 4

What do you put for a time field (day, for instance) if you want the jab to always run at that time?

Answer 4

*
This might look like: 1 * * * *
which will run on the first minute of every hour

Question 5

what comes after the time to execute the task?

Answer 5

The user the command will be run under, followed by the command to be executed

Question 6

command to see all cron jobs for the current user

Answer 6

crontab -l

Question 7

command to create a cron job

Answer 7

crontab -e (for edit)

Question 8

create crons for other users

Answer 8

crontab -u username -e (or -l or whatever other command you want) (may need to use sudo)

Question 9

keyword to make job execute hourly

Answer 9

instead of using all the minute day … etc fields, you can just type @hourly (or @daily, @ weekly, etc)