[Samba] Problem with backup of the Samba 4

[Marcio Demetrio Bacci]

Hi,

I followed the tutorial below to do backup of the Samba4:

https://wiki.samba.org/index.php/Backup_and_Recovery

When I execute the backup script manually, it is executed perfectly, but
when I execute in the crontab, it isn't work.

It is my crontab on Debian 7:
0 1 * * 1-5       /usr/sbin/samba_backup

Does somebody have an idea ?

Regards,

Márcio