As you can see, I always executed the command as sudo sudo crontab -e

So I always executed the commands in the root directory. Which thus never led to success.

Thanks again for the help and the detailed listing.

Greeting

I have always used the command sudo crontab -e and with this it did not work.

Just to clarify.

Normally you are user pi: $ who am I

So crontab -e will work for the pi user.
Using sudo crontab -e will change the crontab for the root user.

Now how can you tell what is what ?

For the user pi:
$ sudo crontab -l -u pi
which is the same as
$ crontab -l
For the user root:
$ sudo crontab -l -u root

Furthermore, when you have activated the root crontab, then the command will run as root, in the root (/) directory.
In this case pm2 reload command will search for the mm.sh script under / and will not find it.
Whereas when activated the pi crontab, the mm.sh script will be searched in the /home/pi directory, where it should be, and it will work.

Use pm2 show mmto show the details on mm under pm2.
Then you will understand it better.

Cron messages normally are directed to /var/log/cron.log, but on my system it is not directed:

$ grep cron /etc/rsyslog.conf
#cron.*				/var/log/cron.log

To see the cron messages, when not in cron.log:

$ tail -F /var/log/syslog | grep CRON

[ On my system I see CRON messages for root, although I do not have root crontab entries. There is a crond running that runs alongside $ systemctl status cron.]

Have fun :-)

I have always used the command sudo crontab -e and with this it did not work.

It works fine with the crontab -e command and then 0 6 * * * pm2 reload mm

Once again, thank you very much for your help!!!

# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command
0 6 * * * pm2 reload mm

Are you running crontab -ewith sudo? Because you have to run it as the user that runs MM (= most likely without sudo).

Edit: @Zwirbel: For me it works using a cronjob. See what I wrote above and if you have questions regarding crontab, just ask again.

55 19 * * * pm2 reload mm

The command works in the console pm2 reload mm

If I add it in the cron job, it will not do any reload.

Here is the excerpt from the crontab

# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command
#
#MONTAG BIS SONNTAG UM 17:02 MAGICMIRROR RELOAD
02 17 * * * pm2 reload mm
#

Maybe a simple script would help, but I don’t know where to put it.

Are you using the GoogleMapsTraffic module? In that case the pm2 reload mm will do. Or a simple Ctrl+R on the mirror. The cronjob should then look something like 55 19 * * * pm2 reload mm (mine is 0 6 * * * pm2 reload mm and it works flawlessly).

Exactly, I use the modules GoogleMapsTraffi on these two monitors and these two monitors will not wake up after a while, if I turned off the monitors for several hours.

Then tonight I will try pm2 reload mm. Unfortunately, the command pm2 restart mm did not work. Then I’m curious.

Why do you want to restart MM? Maybe pm2 reload mmis the better option.

Why … that’s actually a good question. The problem is that if I bring the screens for about 5-6 hours and then turn back on that no picture appears on the monitors. Therefore, I would like a regular restart of my MagicMirros.

Thanks for the link, but it still does not work :(

# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command
#
#MONTAG BIS SONNTAG UM 19:55 MAGICMIRROR RESTART
55 19 * * * pm2 restart mm.sh >/dev/null 2>&1
#
#SAMSTAG REBOOT UM 12:00 MAGICMIRROR REBOOT
24 17 * * * sudo reboot
#

Sounds strange. Maybe you first have to stop the pm2 process before restart, with pm2 stop mm.sh. Don’t forget to complete the line für den reboot am Samstag - sudo reboot >/dev/null 2>&1
regards Michael

# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command
#
#MONTAG BIS SONNTAG UM 19:55 MAGICMIRROR RESTART
55 19 * * * pm2 restart mm.sh >/dev/null 2>&1
#
#SAMSTAG REBOOT UM 12:00 MAGICMIRROR REBOOT
24 17 * * * sudo reboot
#

Good evening

I’d like to see my MagicMirror restart at a certain time each day. What should I enter in the crontrab? I have already tried x variants, but unfortunately it never worked.

27 17 * * * Command pm2 restart mm

The sudo reboot command works fine.

27 17 * * 5 sudo poweroff

Did you forget to write the full command? Try pm2 restart mm.sh
By the way: I prefere the online crontab generator (https://crontab-generator.org/). It’s very easy.
Regards Mike