I'd like to know how to preform an action every hour in python. My Raspberry Pi should send me information about the temp and so on every hour. Is this possible?
I am new to python and linux, so a detailed explanation would be nice.
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Write a python script and add it to your [crontab](http://blog.davidsingleton.org/raspberry-pi-webcam-a-gentle-intro-to-crontab/). – Katriel May 14 '13 at 12:55
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http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python – Corey Goldberg May 14 '13 at 14:30
4 Answers
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write a python code for having those readings from sensors in to text or csv files and send them to you or to dropbox account
and then put a cron job in linux to run that python script every hour
type in your command line
sudo su
then type
crontab -e
In opened file enter:
/ 0 * * * * /home/pi/yourscript.py
where /home/pi/yourscript.py is your fullpath to python script and it will execute this "yourscript.py" every 60 min.
To send your code to you - you have to choose some way- 1) you can send it to your inbox 2) to dropbox account 3) to sql data base In any case you have to write script for that.
Inderpal Singh
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you can check out the sched module (in the Python standard library).
personally, I'd keep it simpler, and just run your script every hour using a system scheduler like cron.
a basic crontab entry to run hourly (on the hour) might look like this:
0 * * * * /home/foo/myscript.py > /dev/null 2>&1
if you really want to write a scheduler in Python, see some of the answers given here: How do I get a Cron like scheduler in Python?
Community
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Corey Goldberg
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Thanks, but can you please provide me an easy example, I am very new to python. – David Gölzhäuser May 14 '13 at 13:29
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many ways to approach it described here: http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python – Corey Goldberg May 14 '13 at 14:28
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but again. I would just write a simple script, and add it to crontab for scheduling. read up on `cron` daemon. – Corey Goldberg May 14 '13 at 14:29
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The easiest way would be to set up a cron job to call a python script every hour.
Martin
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Use systemd. https://www.digitalocean.com/community/tutorials/what-is-systemd
You can schedule it when you want, and monitor it with journalctl
CrabbyPete
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