The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup".
"Back up" means "to save something." "Backup" means "a piece of saved data." It's similar to how "set up" means "to prepare," whereas "setup" means "an assemblage or preparation."
This is from that same Wikipedia link:
The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup".
"Back up" means "to save something." "Backup" means "a piece of saved data." It's similar to how "set up" means "to prepare," whereas "setup" means "an assemblage or preparation."
The bug is valid, and the typo was not intended.