Crond permissions

Question

I have a problem regarding permissions in a CentOS server.

I created a NetCore application that reads some values from dmidecode. When I deployed the application in my CentOS server, I runned the following command:

chmod 777 ApplicationName

Then, I execute it, and eveything works fine.

My problem is when I try to set that application in crond, for that I do:

1) service crond stop

2) crontab -e

3) * * * * * cd /ApplicationFolder && ./ApplicationName

4) service crond start

My application is executed, but I can't get the dmidecode values I am trying to read, I am assuming that I am having a permission problem, because it works fine when executing as a console application.

I tried to set a user in the crond line by doing:

 * * * * * root cd /ApplicationFolder && ./ApplicationName

But nothing happens, the application isn't even started...

Does anyone knows what I am doing wrong?

EDIT

As proposed by the comments, I changed the crontab to:

 * * * * * /ApplicationFolder/ApplicationName

But the same is happening...

The reason why I think I am having a problem related with permissions its because if I run the program as an application values are logged into a text file, while when I execute the application using crond the same info is logged but the values are empty.

I also read that when reading Serial Numbers from dmidecode we would need root privileges, but my current account using crontab is already the root account.

Answer 1

To anyone havin problem like this I managed to solve my problem by using absolute paths.

It seems that cron has some problems with relative paths...

Basically instead of having:

 dmidecode

I have:

 /usr/sbin/dmidecode

That did the trick for me.