[SOLVED] Run script once a week

Fixit7 · 09-13-2016, 04:41 PM

I want to run a script once a week.

In the crontab examples I have seen, you have to specify a time.

However I do not know whether my computer will on at a particular time.

For example.

I want one to run every Monday at whatever time my computer gets turned on.

Dave Lerner · 09-13-2016, 05:30 PM

Install anacron.

Then place the script in the directory /etc/cron.weekly. Or you could put the script in /etc/cron.daily and add some logic in the script that exits unless it's Monday.

Emerson · 09-13-2016, 05:30 PM

http://anacron.sourceforge.net/

Fixit7 · 09-13-2016, 05:52 PM

Will this run outside of a console ?

Quote:

echo xxxx | sudo apt-get update

Dave Lerner · 09-13-2016, 06:07 PM

Running that in a script would problematic, because sudo will ask for a password. It should be run it as root, so that sudo is not needed.

But "apt-get update" should already run daily if anacron is installed, using the script /etc/cron.daily/apt.

Fixit7 · 09-13-2016, 06:27 PM

There is no apt in /etc/cron.daily.

Quote:

echo xxxx | sudo apt-get update supplies the password. (xxxx is not my real password)

michaelk · 09-13-2016, 06:33 PM

You can configure automatic updates.

https://help.ubuntu.com/lts/servergu...c-updates.html

TB0ne · 09-13-2016, 06:40 PM

Quote:

Originally Posted by Fixit7

I want to run a script once a week.
In the crontab examples I have seen, you have to specify a time. However I do not know whether my computer will on at a particular time.

For example. I want one to run every Monday at whatever time my computer gets turned on.

So, you want it to run at system start time?, or every Monday, whichever comes first? Easy...write your script to check the day-of-the-week, and put it in cron, and ALSO put it in your system startup routine. If your system boots on a Friday, it'll check day of week, and not execute. If it boots on Monday...it runs. If your system is ALREADY up on Monday, cron will execute it anyway.

Why make it hard? Otherwise, you do realize that cron can be VERY granular right? And can take regex'es?
http://www.linuxquestions.org/questi...2/#post4654486

Fixit7 · 09-13-2016, 07:01 PM

I found this in /etc/apt/apt.conf.d

10periodic

Quote:

APT::Periodic::Update-Package-Lists "7";
APT::Periodic:

ownload-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";

I think it is already updating.

I was wanting to make sure that the software depositories are always current.

Dave Lerner · 09-13-2016, 07:12 PM

This will show you when "apt-get update" last ran:

Code:

ll -h /var/cache/apt

Fixit7 · 09-13-2016, 07:32 PM

thanks.

It ran today.