Activate the disk quota function of the specified file system in the Linux kernel
quotaon command Execute the quotaon command to enable disk space usage restrictions for users and groups. However, before enabling it, the quota configuration file created through the quotacheck command must exist in the root directory of the file system of each partition.
quotaon(option)(parameter)
-a: Enable the space limit of the partition set by adding quota in the /ect/fstab file;
-g: Turn on the disk space limit of the group;
-u: Enable the user's disk space limit;
-v: Display the command execution process.
File system: Specify the file system for which the disk quota feature is to be activated.