Linix quota （磁盘配额）

更改fatab设定需进行配额的磁盘：加usrquota (/dev/sdb5)
[root@linux4 ~]# vi /etc/fstab
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/sdb5               /app                     ext3    defaults,usrquota        0 0
重新挂载：
[root@linux4 ~]# mount -o remount /app
[root@linux4 ~]# cd /app
[root@linux4 app]# ls
1  lost+found
生产记录用户配额的文件（aquota.user）
[root@linux4 app]# quotacheck /app
[root@linux4 app]# ls
aquota.user  lost+found
设定配额参数：
[root@linux4 app]# edquota -u oracle

Disk quotas for user oracle (uid 502):
  Filesystem                   blocks       soft       hard     inodes     soft     hard
  /dev/sdb5                        0          0       1000 （文件大小）0   0      2 （文件个数）      
启用磁盘配额：
[root@linux4 app]# quotaon /app
测试：
[root@linux4 app]# su - oracle

[oracle@linux4 app]$ touch 222
[oracle@linux4 app]$ touch 333
[oracle@linux4 app]$ touch 111
sdb5: write failed, user file limit reached.
touch: cannot touch `111': Disk quota exceeded

[oracle@linux4 app]$ dd if=/dev/zero of=/app/a.c bs=512k count=1
dd: opening `/app/a.c': Disk quota exceeded