How can you turn off the group quota in /pub?

quotaoff/pub runs the string as a single token with no space, which the shell would interpret as a command named 'quotaoff/pub' rather than quotaoff with an argument, and it omits the required -g flag.

quotaoff -gv /pub correctly uses the -g flag to target group quotas (as opposed to user quotas targeted with -u) and the -v flag for verbose output confirming the action. The /pub argument specifies the mount point or directory on which to disable the group quota, which is the standard quotaoff invocation.

'quotadown' is not a valid Linux quota management command; the correct binary is quotaoff.

Deleting the quota.group file directly bypasses the quota subsystem and does not cleanly disable quotas; the filesystem may still enforce stale quota data or require a remount to reflect the change.