What is the second command used to create quota files?

The command used to create quota files is focused on modifying user or group quotas for filesystem usage. The correct command for this function is edquota. It allows the administrator to edit the quota settings directly for a specific user or group in a text editor. This command is essential in setting specific limits on disk usage to manage resources effectively among users.

In the context of filesystem quotas, edquota creates or modifies the quota files associated with specified users or groups, whereas other commands serve different purposes. For example, quotacheck is used to scan and repair quota files, quota displays the usage and limits for users and groups, and setquota is a more automated way to set quotas for users but does not create the initial quota files.

Thus, edquota is central to creating and configuring the actual quota parameters, making it the correct choice for the second command used to establish quota files in a Linux environment.