Short answer: use the scheduler add-on: http://addons.heroku.com/scheduler Long answer: When you do heroku run, we spin up a dyno put your code on it execute your command, wait for it to finish throw the dyno away Any changes you made to crontab would be immediately thrown away. Everything is ephemeral, you cannot edit files on … Read more
When I want to test my cron jobs I usually set the interval very low and monitor the logs closely. When I am convinced the entry is correct, I set the interval back to a sane value. For example, run job every two minutes: */2 * * * * echo “Hello World” And the I … Read more
Use: php index.php welcome show as command in your crontab. E.g.: 0 * * * * php /home/username/index.php welcome show Source (ver. 2.2.0) http://www.codeigniter.com/userguide2/general/cli.html Source (ver. 3.*) http://www.codeigniter.com/user_guide/general/cli.html Source (ver. 4.*) http://codeigniter.com/user_guide/cli/cli.html
These are valid formats for cron expressions: 0 0 * * * * = the top of every hour of every day. */10 * * * * * = every ten seconds. 0 0 8-10 * * * = 8, 9 and 10 o’clock of every day. 0 0 6,19 * * * = 6:00 … Read more
Your syntax is slightly wrong. Say: */15 * * * * command | |–> `*/15` would imply every 15 minutes. * indicates that the cron expression matches for all values of the field. / describes increments of ranges.
My question is are there any disadvantages to running a set up like this compared to a traditional cron job set up? As long as //run the code isn’t a CPU-bound thing like cryptography, stick with 1 node process, at least to start. Since you are requiring request I guess you might be making an … Read more
You can also ensure your PATH ends up in the crontab, by putting the following at the top of the schedule.rb file: env :PATH, ENV[‘PATH’] https://groups.google.com/forum/#!msg/whenever-gem/yRLt3f2jrfU/Exu3xfCo8DAJ If above solution don’t work for you, try: env :GEM_PATH, ENV[‘GEM_PATH’]
Assuming you are using a unix OS, you would do the following. edit the crontab file using the command crontab -e add a line that resembles the one below */2 * * * * /Desktop/downloads/file_example.py this can be used to run other scripts simply use the path to the script needed i.e. */2 * * … Read more
You could tell wget to not download the contents in a couple of different ways: wget –spider http://www.example.com/cronit.php which will just perform a HEAD request but probably do what you want wget -O /dev/null http://www.example.com/cronit.php which will save the output to /dev/null (a black hole) You might want to look at wget’s -q switch too … Read more