Ubuntu system to disk quotas (Quota)

Requirements: Disk quotas for the USB drive, different users of different usage capacity

First step: Install the quota command

sudo apt-get Install quota

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The second step: partition the USB drive, the total capacity is divided into one partition

sudo fdisk/dev/sdb

N->p->enter->enter->enter->w

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Step three: Format the partition (EXT3)

sudo mkfs.ext3/dev/sdb1

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Ask for information, enter (enter) on the line

Fourth step: Mount Partition/DEV/SDB1

sudo mkdir/mnt/quotadir

sudo mount/dev/sdb1/mnt/quotadir/

Mount | grep sdb1

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Fifth step: Permissions for quotas for this directory

sudo mount-o remount,usrquota,grpquota/mnt/quotadir/

Mount | grep sdb1

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Sixth step: Establish quota record file, Quotacheck scan on the line

sudo quotacheck-avug

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Seventh step: Open and close the quota service

Open: sudo quotaon-vug/mnt/quotadir/

Off: sudo quotaoff-vug/mnt/quotadir/

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Eighth step: Create two users in the same group, followed by space quotas for these two users

sudo groupadd quotagroup

Cat/etc/group | grep quotagroup

sudo useradd-g quotagroup quotauser1

sudo useradd-g quotagroup quotauser2

cat/etc/passwd | grep quota

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Nineth Step: Assign a limit to a specified user or group

Assign a 250M limit to quotauser1, not more than 300m:sudo edquota-u Quotauser1

Assign a 250M limit to quotauser2, not more than 300m:sudo edquota-u Quotauser2

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The second user, by the same token, writes his own

Assign a 500M limit to the Quotagroup group, not more than 600m:sudo edquota-g Quotagroup

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Set Grace time 14 days: sudo edquota-t

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Tenth step: Show the user or group limit phenomenon

Display user quotas: sudo quota-uvs quotauser1 quotauser2

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Show group quotas: sudo Quota-gvs quotagroup

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11th Step: Display quota information for the file system

Show Users: sudo repquota-auvs

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Show groups: sudo Repquota-agvs

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12th step: Test is valid

Switch User: sudo su quotauser1

Create a large file: dd If=/dev/zero of=bigfile bs=1m count=270

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Switch back to the main user view: sudo repquota-auvs

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When you write again, you will get an error, only the capacity of the upper value size can be written

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Complete.

Ubuntu system to disk quotas (Quota)