This is my first project with crontab so I am unsure what I am doing wrong
I was under the assumption you wrote something like
0 * * * * /home/pi/dir/file
But my code is
0,30 * * * * /home/pi/ES/logTemp.py
but nothing appears to be working. I checked
service cond status
and got
cond.service
Loaded: not-found (Reason: no such file or directory)
Active: inactive (dead)
I double checked and I wrote the directory (I think) correctly and that is the name of my file I want to run.
Any tips for a newbie?
You are using correct code to schedule the crontab, just restart the cron and it would work.
but the command you are executing to check the status is incorrect. i.e. you are using cond instead of crond(service cond status).
1.
You can try the below code.(its same of your code)
*/30 * * * * /home/pi/ES/logTemp.py
To restart the cron, Run
service crond restart
And to check status of cron, Run
service crond status
Use sudo if logged in using other username than root
Related
I tried to create a CRON job that runs every minute. As a root user, I ran crontab -e, and in the cronjob, I put in my command * * * * * /usr/bin/php {redacted}/index.php > {redacted}/output.txt
the {redacted} file path has permissions added: chmod ogu+rwx -R so everyone should be able to access it. I even created a new user with no sudo or root privileges, and running /usr/bin/php {redacted}/index.php > {redacted}/output.txt obviously writes the output of {redacted}/index.php to {redacted}/output.txt. However, my cron job ends up overwriting and turning the .txt file to just blank, nothing. I have no idea what is going on since I already made sure there were no permission errors, and cron jobs don't seem to have a visible log or output?
I would love to have any ideas about this. I even tried to add the cron job * * * * * root /usr/bin/php {redacted}/index.php > {redacted}/output.txt, all to the same output.
One more thing... I have tried to set the {redacted} location to /var/www/html, /var/www/{a user with sudo perms}, and {/usr/local/bin} all with the same result.
Update:
I tried something as simple as * * * * * php -v > {redacted}/output.txt and * * * * * /usr/bin/php -v > {redacted}/output.txt still with the same result, so it seems like the error is not with requiring root permissions to run my php program
I'm trying to run a cronjob to start and stop a server under a non-sudo user. I've tried asking others and doing what I saw from looking on google before asking here, but I'm still stuck.
Here's what's in my crontab for the server user:
* * * * * /home/server/startup/stop.sh
* * * * * /home/server/startup/start.sh
Here is what is in my stop.sh script:
#! /bin/sh
screen -r server -X quit
Everything runs normally if I run it using sh, and I only encounter a problem when using cron.
From what I see there could be 2 possible problems:
If the lines you are running in crontab are (and only those):
home/server/startup/stop.sh
home/server/startup/start.sh
then you are missing the time part of the line. If you want to run your program only once on boot you can run:
#reboot home/server/startup/start.sh
You are not giving the full path to your program (possibly you are just missing a / in the begging). Try running
* * * * * /home/server/startup/start.sh
or
#reboot /home/server/startup/start.sh
If these don't work I recommend you try the following to troubleshoot the issue:
Run the command using sh in the cron:
* * * * * /bin/sh /home/server/startup/start.sh
Try redirecting the stdout and stderr of your command to a file and see if any errors occur
I have currently running python script on debian system. Now because of some reasons I changed this script and updated cron, but nothing has changed. Also, I tried to save this cron in different file and create new cron - line with job appears, but script doesn't work.
CRON[22310] (root) CMD ( /usr/bin/python /home/radmin/test/test.py)
from /etc/crontab for new script:
*/1 * * * * root /usr/bin/python /home/radmin/test/test.py
for old script:
*/1 * * * * root python /home/radmin/base.py
Script runs correctly without cron.
Tried restarting and reloading cron.
It looks like cron dosen't recognize the root command you add.
try instead opening cron using sudo crontab -e and then add your code:
*/1 * * * * /usr/bin/python /home/radmin/test/test.py
by opening it up with sudo it will add it to the root user cron jobs.
Problem was in python code. Crontab is okay. I'm using python lib "requests" and there is a method to get post request content - ".text", so this method doesn't want to work in cron (empty error logs while running) (still don't know why). So changing .text to .content solved this issue.
I am trying to run a Cronjob in AWS (EC2). My crontab file looks like this
1 * * * * node /var/apps/project-name/file.js
This is supposed to trigger my file.js every 1 minute but it is not happening. Can someone help me where I am wrong?
Pls Comment if more details are needed
There is few options:
1. Your cron user (who executes cron) have no permissions on file
To fix this, you can add permissions to execute with this command sudo chmod 755 /var/apps/project-name/file.js
2. Cron user can't find node, so you need to specify full path.
To find your node.js on server, run which node and than add it to cron file
Like this:
0 * * * * /usr/bin/node /var/apps/project-name/file.js
I'm trying to make a crontab with crontab -e, but it saves it in tmp/crontab.FTt6nI/crontab
the crons don't work so I guess that's the problem. But I don't understand why.
type:
crontab -l
to show list of crontab, your newly added crontab should be on the list. you could set the crontab to email the output to you by > youremail#aaa.com, in this way you can assure the cronjob is already run.
example:
* * * * * /usr/bin/php /home/username/public_html/cron.php > aaa#aaa.com
make sure the crond is running:
/etc/init.d/crond status
if it down, start it (centos/rhel):
/etc/init.d/crond start
debian/ubuntu:
/etc/init.d/cron start
hope that help.