The edquota
utility is a quota editor. By default, or if
the -u
flag is specified, one or more users may be
specified on the command line. For each user a temporary file is created with
an ASCII representation of the current disk quotas for that user. The list of
file systems with user quotas is determined from
/etc/fstab. An editor is invoked on the ASCII file.
The editor invoked is
vi(1) unless
the environment variable EDITOR
specifies otherwise.
The quotas may then be modified, new quotas added, etc. Block
quotas can be specified in bytes (B), kilobytes (K), megabytes (M),
terabytes (T), petabytes (P), or exabytes (E). If no units are specified,
kilobytes are assumed. Inode quotas can be specified in kiloinodes (K),
megainodes (M), terainodes (T), petainodes (P), or exainodes (E). If no
units are specified, the number of inodes specified are used. If the
-h
flag is specified, the editor will always display
the block usage and limits in a more human readable format rather than
displaying them in the historic kilobyte format. Setting a quota to zero
indicates that no quota should be imposed. Setting a hard limit to one
indicates that no allocations should be permitted. Setting a soft limit to
one with a hard limit of zero indicates that allocations should be permitted
only on a temporary basis (see -t
below). The
current usage information in the file is for informational purposes; only
the hard and soft limits can be changed.
On leaving the editor, edquota
reads the
temporary file and modifies the binary quota files to reflect the changes
made.
If the -p
option is specified,
edquota
will duplicate the quotas of the
prototypical user specified for each user specified. This is the normal
mechanism used to initialize quotas for groups of users. If the user given
to assign quotas to is a numerical uid range (e.g. 1000-2000), then
edquota
will duplicate the quotas of the
prototypical user for each uid in the range specified. This allows for easy
setup of default quotas for a group of users. The uids in question do not
have to be currently assigned in /etc/passwd.
If one or more -e
fspath
[:bslim[:bhlim
[:islim[:ihlim]]]] options are
specified, edquota
will non-interactively set quotas
defined by bslim, bhlim,
islim, and ihlim on each
particular file system referenced by fspath. Here
bslim is the soft limit on the number of blocks,
bhlim is the hard limit on the number of blocks,
islim is the soft limit on the number of files, and
ihlim is the hard limit on the number of files. If any
of the bslim, bhlim,
islim, and ihlim values is
omitted, it is assumed to be zero, therefore indicating that no particular
quota should be imposed. Block quotas can be specified in bytes (B),
kilobytes (K), megabytes (M), terabytes (T), petabytes (P), or exabytes (E).
If no units are specified, kilobytes are assumed. Inode quotas can be
specified in kiloinodes (K), megainodes (M), terainodes (T), petainodes (P),
or exainodes (E). If no units are specified, the number of inodes specified
are used.
If invoked with the -f
option,
edquota
will read and modify quotas on the file
system specified by fspath only. The
fspath argument may be either a special device or a
file system mount point. The primary purpose of this option is to set the
scope for the -p
option, which would overwrite quota
records on every file system with quotas otherwise.
If the -g
flag is specified,
edquota
is invoked to edit the quotas of one or more
groups specified on the command line. The -p
flag
can be specified in conjunction with the -g
flag to
specify a prototypical group to be duplicated among the listed set of
groups. Similarly, -e
flag can be specified in
conjunction with the -g
flag to non-interactively
set-up quotas on the listed set of groups.
Users are permitted to exceed their soft limits for a grace period
that may be specified per file system. Once the grace period has expired,
the soft limit is enforced as a hard limit. The default grace period for a
file system is specified in
<ufs/ufs/quota.h>
. The
-t
flag can be used to change the grace period. By
default, or when invoked with the -u
flag, the grace
period is set for all the file systems with user quotas specified in
/etc/fstab. When invoked with the
-g
flag the grace period is set for all the file
systems with group quotas specified in /etc/fstab.
The grace period may be specified in days, hours, minutes, or seconds.
Setting a grace period to zero indicates that the default grace period
should be imposed. Setting a grace period to one second indicates that no
grace period should be granted. Quotas must be turned off for the file
system and then turned back on for the new grace period to take effect.
Only the super-user may edit quotas.