How to run scheduled task on Ubuntu with line from Laravel

I need to run sudo php artisan backup:run and automatically enter password everyday 3pm. I know how to do this on Windows just by using tasks scheduler and set run as admin on the .bat script.

This is should be pretty much the same on Ubuntu 14.04 as it is on the latest releases - however, they maybe some differences.

The task is divided into two parts:

• To be able to sudo without a password, add the user to the sudoers file and allow them to not require a password.
• To run a job automatically, use cron.

sudoers

Add the user to the sudo group with

usermod -aG sudo <username>

Change <username> to the user that you want to run the job as.

To avoid having to enter the password, edit the /etc/sudoers file:

visudo

and add the following line at the end of the file:

<username>  ALL=(ALL) NOPASSWD:ALL

Again, change <username> to the user that you want to run the job as.

Note that a better approach would be to create a new sudoers file for your particular user instead, instead of editing the main sudoers file, like so:

echo "<username>  ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/username

For more info see How to Add User to Sudoers in Ubuntu.

See also this question, How can I add a user as a new sudoer using the command line?

cron

cron is very powerful and there are a lot of different options. However, to accomplish your task, here are just the basic essentials:

To edit the crontab, use

crontab -e

or for a different user, use

crontab -u ostechnix -e

If you have never run crontab before, you may be asked to choose an editor the first time that you run it.

Then for a 3 pm job add the line

0 15 * * * <command-to-execute>

So in your case use

0 15 * * * sudo php artisan backup:run

Save and exit to editor. Then to check the crontab, use

crontab -l

If you want to change the time the fields are as follows, from the cron man page.

       The time and date fields are:

              field          allowed values
              -----          --------------
              minute         0-59
              hour           0-23
              day of month   1-31
              month          1-12 (or names, see below)
              day of week    0-7 (0 or 7 is Sunday, or use names)

       A field may contain an asterisk (*), which always stands for
       "first-last".

For more info about crontab, see A Beginners Guide To Cron Jobs, or type man cron.

See also this question, How do I set up a Cron job?