by most modern operating systems, including Unix-like systems, such as AIX (using JFS or JFS2 filesystem), Linux (using ext3, ext4, ext2, XFS (integrated support) among other filesystems), Solaris (using UFS or ZFS), Microsoft Windows starting with Windows 2000, Novell NetWare, VMS, and others. The method of administration for disk quotas varies between each of these operating systems. Unix-like systems typically provide a quota command for both administration and monitoring; graphical front-ends to the command may also be used. Unix and Unix-like operating systems frequently feature a grace period where users may exceed their quota limits for a brief period of time. Windows 2000 and newer versions use the "Quota" tab of the disk properties dialog. Other systems provide their own quota management utilities. Common Unix disk quota utilities quota - display a user's file system disk quota and usage; edquota - Edit user quotas for file system; setquota - Set disk quotas for file system; repquota - Summarize quotas for a file system; quotacheck - File system quota consistency checker; quotaon - Turn file system quotas on and off; /etc/fstab (Linux) or /etc/vfstab (Solaris) - list of default parameters for each file system including quota status. See also File system External links AIX disk quota system overview, IBM Solaris disk quota tutorial. Linux DiskQuota homepage System administration