Analysis of related usage of quota disk commands in Linux system

Quota

Displays the space and restrictions that the disk has used.

Syntax: Quota [-quvv][user name ...] or quota [-gqvv][group name ...]

Supplemental NOTE: Executes the quota instruction, queries the disk space limits, and learns how much space has been used.

Parameters

-g lists the disk space limits for the group.

-Q Concise list that lists only those parts that exceed the limit.

-U lists the user's disk space limit.

-V Displays the space limits for the user or group in all storage devices that are mounted on the system.

-V Displays version information.

In the work of network management, because the hard disk resource is limited, it is often necessary to set the user's Linux disk quota for the multi-user server. This feature is necessary for a common multi-user server (free or fee-based). Quota is the tool for implementing Linux disk quotas under Redhatlinux.

Cases:

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The code is as follows:

[root@linux~]# Quota-guvs #显示目前root的quota限制值

[root@linux~]# Quota-vs-udmtsai #显示dmtsai这个使用者的磁盘配额

Edquota

Edquota (Edit quota)

Function Description: Edit the quota of the user or group.

Syntax: Edquota [-p < Source user name >][-ug][user or group name ...] or Edquota [-ug]-T

Supplemental Note: The Edquota preset uses VI to edit quota settings for the user or group.

Parameters

-U sets the user's quota, which is the preset parameter.

-G sets the quota of the group.

-p< the source user name > apply the quota settings of the source user to other users or groups.

-T sets the grace period.

Cases:

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The code is as follows:

[Root@linux ~]# edquota-u zhangy #设定zhangy这个用户的quota限制值

[Root@linux ~]# edquota-p zhangy-u tank #将zhangy的quota限制值 (30MB) copied to tank this user

[Root@linux ~]# edquota-t #修订宽限时间

Quotacheck

Quotacheck command: For scanning mounted file systems and setting disk space and limits

Parameters:

-A scans all partitions

-B Backup

-D Debug Mode

-C re-create files

-F Forced inspection

-I interaction mode

-V Runtime displays detailed processing information

-G Displays the number of directory files that the group occupies

-U Displays the number of directories per user

-M: "Force" to perform a quotacheck scan.

Cases:

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The code is as follows:

[Root@linux ~]# Quotacheck-avug #将所有的在/etc/mtab, containing quota supported partition for scanning

QUOTACHECK:SCANNING/DEV/HDB1 [/disk2] Done

Quotacheck:checked 3 Directories and 4 files

[root@linux ~]# quotacheck-avug-m #强制扫描已挂载的filesystem