I tried a lot of methods but ended up with nothing in hand..My simple target is to reset a variable to zero at the end of the day.
i checked the location of php as "which php" and "whereis php"
which resulted into /usr/bin/php
here are some of things i tried..
/usr/local/bin/php -f /home/USERNAME/public_html/developer3/crons/filename.php
/usr/bin/php -f /home/USERNAME/public_html/developer3/crons/filename.php
php -q /home/USERNAME/public_html/developer3/crons/filaname.php
/usr/bin/wget -O http://subdomain.sitename.com/crons/filename.php
for quick results, i kept the timming as every minute to execute the code. i could successfully execute the code as
http://subdomain.sitename.com/crons/filename.php
please guide me.
If the path to php on your system is /usr/bin/php then the command you should be running with cron should be
/usr/bin/php /full/path/to/php/script.php
Is the script you're running designed to be invoked from the php-cli in that way? If it isn't and works correctly when you use a browser then you can use curl, if it's installed on your server
curl -A cron-job http://subdomain.sitename.com/crons/filename.php
It would likely be helpful in any event to configure the MAILTO variable (since you're using cPanel, it's just a text box on the appropriate page that you can fill in) so that you get an email with the output from your cron jobs. Having the output emailed to you will help you diagnose what's causing your script to not have the desired effect when it runs.
Related
I have installed this extension to assist me in my cron jobs omnilight/yii2-scheduling. The extension has good documentation that is why I settled on it amidst all the other cron-jobs extensions available for yii2. However, I am stack at some place that I need assistance. There is a place where I am asked to put a single line of code on the crontab:
* * * * * php /path/to/yii yii schedule/run --scheduleFile=#console/config/schedule.php 1>> /dev/null 2>&1
However, I am not sure where to place it, i.e. where is the crontab in yii2? anyone who has used this extension and is able to get it running to assist me here.
Maybe a little later but you must put that in the crontab, a cron is :
cron is a Unix, solaris, Linux utility that allows tasks to be automatically run in the background at regular intervals by the cron daemon
and the crontab is where are stored all this crons. To edit this file you must use in terminal:
crontab -e
Put that line here. Save and you are ready to go.
Hi I'm a first year game programing student learning Unix Bash, I have run into a problem trying to understand crontab. I'm trying to do some rather simple things, checking to see if I am online, getting information about a given website, and ping another website to verify it is online. My script file does all of this without fail, however when I try to perform these tasks through crontab I get emails telling me absolutely nothing but jibberish. The output basically just tells me that I am trying to do all these things, but it doesn't output the results. I'm not sure where I am going wrong.
Just to verify I do have permission on the system to use crontab, and I have the script running every minute while I am trying to get it working. I'm hoping someone can point me in the right direction, all of my research online has really just led me astray.
This is my crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
HOME=/
LOGNAME=username
* * * * * /bin/bash /home/students/~/online.sh
30 23 1 * * rm online.log
this is my script
touch online.log
who | grep username >> online.log ; whois yahoo.ca >> online.log ; ping -c 1 www.google.com >> online.log
You need to use absolute paths in your scripts if you want to execute those using cron.
Note that cron executes in a different environment from what you get while executing a script on the command line. For example, changes lines like
touch online.log
to include the absolute path to online.log.
The output is being redirected into online.log, so you need to look there, not in your emails. If you want the output to be in the emails as well, you should look into using tee instead of a redirection.
I have a cron job on an Ubuntu 10.4 server that stopped running for no apparent reason. (The job ran for months and has not been changed.) I am not a *nix guru so I plead ignorance if this is a simple problem. I can't find any reason or indication why this job would have stopped. I've restarted the server without success. Here's the job:
# m h dom mon dow command
0 * * * * java -jar /home/mydir/myjar.jar >>/home/mydir/crontaboutput.txt
The last line in the output file shows that the program ran on 8/29/2012. Nothing after that.
Any ideas where to look?
There should be something in your system log when the job was run. The other thing you could >try is to add 2>&1 to the job to see any errors in your text file. – Lars Kotthoff yesterday
This proved to be the key piece of information - adding 2>&1 allowed me to capture an error that wasn't getting reported anywhere else. The completed command line then looked like:
java -jar /home/mydir/myjar.jar 2>&1 >>/home/mydir/crontaboutput.txt
Perhaps your cron daemon has stopped, or changed configuration (i.e. /etc/cron.deny). I suggest to make a shell script, and running it from crontab. I also suggest to run thru your crontab some other program (just for testing) at some other time. You can use the logger command in your shell script for syslog. Look into system log files.
Accepted answer is correct, (i.e, check the error logs) which pointed out the error in my case. Besides check for the following issues
include('../my_dir/my_file.php) may work from url but it will not work when cron job is run, will spit out error.
$_SERVER variables does not work inside cron os if you are using $_SERVER['DOCUMENT_ROOT'], it will not be recognized and you will have an error in the cron job.
Make sure to test the cron and have it run, send an email etc to make sure it is run.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Cron job on Ubuntu for php
I am running and ubuntu server and wanted to run a php script every day. I have done some research and found that cron is the best way of doing this however, this is where i got stuck, a lot of the information on the internet about cron is very hard to follow and understand.
So i wanted to execute a simple php script once a day, the script i made for testing simply just deletes a record from a database, but the real script will do a lot more.
I tried setting up a task through plesk which is provided through my web host service but it didn't seem to execute when i wanted it to, i used 1 for minutes, 22 for hours, * for day, * for week and * for month and thought this would execute every day at 22:01.
I have the directories on my server:
cron.hourly
cron.daily
cron.weekly
cron.monthly
I thought i could dump i file in there and it would execute for example every day, but i'm guessing i need to make a cron script to call a php script right?
If i were to go the way of putting a file in the cron.daily folder how would i go about it?
Also if there are any steps i need to take on the php side please let me know?
Thanks a lot for your time.
There's couple of ways to setup cron job. Assuming you got shell access you could do crontab -e from console and define job there, i.e. like this:
1 22 * * * command
which would trigger command (whatever it is) at 22:01 each day (not sure why you set minutes to 1 instead of 0 though). To launch PHP script from there you would either have to install php-cli, and then invoke it that way:
1 22 * * * <path>/php -q script.php
You can also call bash script here, to setup all the stuff like paths etc and then call your php script form bash - sometimes it is simpler to do that way instead of crafting way too long command line for cron. And it's simpler to update it later. also, you could turn your php script into bash-runnable script by setting it execution bit (chmod a+x script.php) and adding shell's shebang:
#!/usr/bin/php -q
<?php
...
If your script got too many dependencies and you'd prefer to call it via web, you could use wget to mimic a browser. so your command would be:
/usr/bin/wget --delete-after --quiet --spider <URL-TO-YOUR-SCRIPT>
wget manual can be accessed by man wget or wget -h, or is on this website. Aternatively you may use HEAD tool from perl-www package - but it requires perl while wget is a standalone tool. If you use HTTPS with self signed certs, add --no-check-certificate to your invocation arguments. And you may also want to setup .htaccess and limit web access to your cron script to localhost/127.0.0.1
every minute:
* * * * * /path/script.php
every 24hours (every midnight):
0 0 * * * /path/script.php
Se this reference for how crontab works: http://adminschoice.com/crontab-quick-reference, and this handy tool to build cron jobx: http://www.htmlbasix.com/crontab.shtml
I've never written a cron job cmd before in my life, and I want to make sure its right before I run it on my site so nothing messes up.
There is a json feed that my script autopost.php grabs and adds to my database. Usually I just point my browser to the file so it runs and updates the database but I hear cronjobs can do that automatically for me. Would this be correct?
wget -O http://www.domain.com/autopost.php
EDIT:
Okay with your help I got it working. However it only work when I added /dev/null after wget -O Why is that?
You're missing the run schedule part of the cron command. you need something like this:
* * * * * wget -O http://www.domain.com/autopost.php
That says "do a wget every minute. For the syntax, see:
http://www.adminschoice.com/crontab-quick-reference
-sure it can !!
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