One key difference with mission and vision statements is the time element. A mission statement talks primarily about what the company is currently doing. It focuses on the present state of the organization. A vision statement, on the other hand, is a projection of where the company wants to be in the future.
To add or update job in crontab, use below command. It will open crontab file in editor where job can be added/updated. # crontab -e. By default it will edit crontab entries of current logged in user. To edit other user crontab use command as below. # crontab -u username -e.
To schedule one-time only tasks with cron, use the at or batch command. For more, see ARCHIVED: In Unix, what are the at and batch commands, and how do I use them to submit non-interactive job requests? For commands that need to be executed repeatedly (e.g., hourly, daily, or weekly), you can use the crontab command.