How can execute a cron at machine sturtup?

Question

I am trying to make a cron for my machine. It there a possibility to make it for every starting up of my pc?

Some way like this :

# File : /tmp/crontab.LgVuXf/crontab

uptime ... command

Answer 1

As specified in man 5 crontab, which contains the format of crontab files:

Instead of the first five fields, one of eight special strings may appear:

          string         meaning
          ------         -------
          @reboot        Run once, at startup.
          @yearly        Run once a year, "0 0 1 1 *".
          @annually      (same as @yearly)
          @monthly       Run once a month, "0 0 1 * *".
          @weekly        Run once a week, "0 0 * * 0".
          @daily         Run once a day, "0 0 * * *".
          @midnight      (same as @daily)
          @hourly        Run once an hour, "0 * * * *".

So you should be able to add a crontab line in the form

@reboot  bash /full/path/to/the/script 

You can use the command crontab -e to edit the file, or input directly --- look at man crontab for details.