Can't update or install software

[RonaMacGuffin]

Is it /var/lib/pacman/db.lck ? Renamed to db.lck.bak or just deleted?

Hi! Can you pls. write a full command, because many of us are at very "high levels" in linux. 

I try all above but no change.
Not such a command and so on..

Rename with

sudo mv /var/lib/pacman/db.lck /var/lib/pacman/db.lck.bak

Or delete with

sudo rm /var/lib/pacman/db.lck