Is there something equivalent I could do in crontab to activate a virtualenv? This works well for me… ## call virtualenv python from crontab 0 9 * * * /path/to/virtenv/bin/python /path/to/your_cron_script.py I prefer using python directly from the virtualenv instead of hard-coding the virtualenv $PATH into the script’s shebang… or sourcing the venv activate
I ran into this same problem. I have a docker container that runs cron to execute some shell scripts periodically. I too had a hard time finding out why my scripts would run fine when I manually executed them inside the container. I tried all the tricks of creating a shell script that would run … Read more
You can enable logging for cron jobs in order to track problems. You need to edit the /etc/rsyslog.conf or /etc/rsyslog.d/50-default.conf (on Ubuntu) file and make sure you have the following line uncommented or add it if it is missing: cron.* /var/log/cron.log Then restart rsyslog and cron: sudo service rsyslog restart sudo service cron restart Cron … Read more
just provide the full path to node /usr/local/bin/node in your cron job like: 30 6 1 * * /usr/local/bin/node /home/steve/example/script.js
Answer Modify your Tuesday cron logic to execute every other week since the epoch. Knowing that there are 604800 seconds in a week (ignoring DST changes and leap seconds, thank you), and using GNU date: 0 6 * * Tue expr `date +\%s` / 604800 \% 2 >/dev/null || /scripts/fortnightly.sh Aside Calendar arithmetic is frustrating. … Read more
If you insist of running your script from cron: * * * * * /foo/bar/your_script * * * * * sleep 15; /foo/bar/your_script * * * * * sleep 30; /foo/bar/your_script * * * * * sleep 45; /foo/bar/your_script and replace your script name&path to /foo/bar/your_script
Based on the comments try */5 * * * * wget http://example.com/check [Edit: 10 Apr 2017] This answer still seems to be getting a few hits so I thought I’d add a link to a new page I stumbled across which may help create cron commands: https://crontab.guru
Every job that’s run by cron is run in the background automatically, so no need for the & See this too.
Cron utility is an effective way to schedule a routine background job at a specific time and/or day on an on-going basis. Linux Crontab Format MIN HOUR DOM MON DOW CMD Example::Scheduling a Job For a Specific Time The basic usage of cron is to execute a job in a specific time as shown below. … Read more