Add Permission for hp doctor to update Hplip

[Lanze]

Just tried to update (on mint 18.2. cinnamon) HPLIP with hp-doctor. But update failed because of

Insufficient permission to access file /etc/cups/ppd/Deskjet-F2200-series.ppd

. Saw on https://answers.launchpad.net/ubuntu/+question/327417 that with

sudo chmod 644 /etc/cups/ppd/

could be a solution of the problem. Could I use indeed

sudo chmod 644

to give hp-doctor root permission in oder to finish update with HPLIP?
Hope someone could help out! Thanks a lot!
machine: Thinkpad X270

[deepakdeshp]

Please use first command