I am trying to add a FuelPHP Task as Cron job using CronTab.

I added the command as

```
* * * * * /usr/bin/php /var/www/project1/oil r welcomeTask

```

While doing this when i see the cron log in /var/log/cron, it show the cron job is called, but nothing happens as per the code.

But when I execute same code 

```
/usr/bin/php /var/www/project1/oil r welcomeTask

```

in terminal it get executed properly and gives correct result.

Can anyone suggest me the correct way to execute the FuelPHP Task using CronTab.

Thank you in advance. :)