I’ve found a solution to load rbenv. Either with a loader importing rbenv to the PATH : */1 * * * * /bin/bash -c ‘. $HOME/.rbenv/loader.sh ; cd /data/app/; ruby -v’ The ‘.’ before ‘$HOME/.rbenv/loader.sh’ is important, it runs the script in the current shell Or without loader, which is better : */1 * * … Read more
While @einterview’s answer is almost correct, it’s important to note that a * in the minute column will run the job every minute of that hour. If intending to run once every hour, steps would be: SSH into server. Get list of current user’s jobs with $ crontab -l Edit jobs list with $ crontab … Read more
cron is the name of the tool, crontab is generally the file that lists the jobs that cron will be executing, and those jobs are, surprise surprise, cronjobs.
Going back a step further from Vixie cron, the “wday OR mday” logic was present in System V cron, but not System III or anything earlier. Before Paul Vixie wrote his cron replacement, BSD cron was like the SysIII-and-earlier cron. All 5 fields were ANDed. The post-4.4 BSDs adopted Vixie cron, making themselves more SysV-like. … Read more
You can run cron without daemon mode. root@xxxxxx:~# cron -f I was just trying to test it: I started /bin/bash in a new container apt-get install cron nano screen getty tty -a root screen, in screen I created 2 terminals: first: cron -f second: crontab -e – edit your crontab, save and you can watch … Read more
you can add a bean to get cron value from database in the SpringBootApplication main class or in any of the configuration class. Example code is below: @Autowired private CronRepository cronRepo; @Bean public int getCronValue() { return cronRepo.findOne(“cron”).getCronValue(); } you should create a table and provide suitable values in the database. After that you can … Read more
May be it is, cron jobs will run in their own shell. So you can’t expect to see asdf on your console. What you should try is * * * * * echo asdf > somefile_in_your_home_directory_with_complete_path.log Next check the file by doing a tail: tail -f somefile_in_your_home_directory_with_complete_path.log And if it’s not, check if the cron … Read more
You need to escape % character with \ mysqldump -u ‘username’ -p’password’ DBNAME > /home/eric/db_backup/liveDB_`date +\%Y\%m\%d_\%H\%M`.sql
The short answer is that you have to set the DISPLAY environment variable, and then the app will run. The long answer is that we’ve got Xauth, and unless you’re running as the same user on the same machine that’s probably not going to work unless you export the Xauth credential from the account running … Read more