Namely soft and hard . In this portion now, I should explain Soft , Hard and Grace . By the way, these are limits. Soft indicates the maximum amount of disk usage a quota user has on the specified partition. Hard specifies the absolute limit on the disk usage but only when grace period is set.
Grace is a time limit before the soft limit is enforced for a file system with quota enabled.
I'll explain the last line. You could change it to how many hours, minutes or seconds the hard limit or soft limit be enforced. Which means, that after 7 days, it should locked-up the usage of the user. All should be workin fine. Back to NHF Menu Installation Security Modems Shell Config.