diskusg(8)diskusg(8)NAMEdiskusg - Generates disk accounting data by user ID
/usr/sbin/acct/diskusg [-U number] [-s] [-v] [-p pw_filename] [-u
u_filename] [-i ignlist] [file_spec...]
Sets the number of internal allocated user structures to the specified
number, one for each user. The default is 1000. Ignores the data in
the specified ignlist file system. The ignlist operand specifies a list
of file system names, separated with commas or enclosed by quotation
marks. Uses the specified pw_filename file as the password file used
to generate login names. The default password file is /etc/passwd.
Combines all records for a single user into a single record. Input
data must be in the same format as the output of the diskusg command.
If you specify the file_spec operand with the -s option, the operand
must be an ASCII file containing data in the appropriate format. If
the file_spec operand is not specified, input data will be taken from
standard input. Writes a record to u_filename for each file that has
changed its user ID to user no one. Each record consists of the spe‐
cial file name, the inode number, and the user ID. Writes a list of
all files charged to user no one to standard error.
Specifies one or more file systems. How you specify a file system
depends on whether it is UFS or AdvFS and whether it is mounted.
To specify a UFS file system that is mounted, enter the name of
its character device special file, for example: /dev/rrz3c.
To specify a UFS file system that is not mounted, enter the name
of its block device special file, for example: /dev/rz3c.
To specify an AdvFS fileset that is mounted, enter the name of
the file domain, a pound-sign(#) character, and the name of the
fileset, for example: root_domain#root.
You cannot specify an AdvFS file system that is not mounted.
The diskusg command generates intermediate disk accounting information
about files in the specified file_spec or from standard input.
The diskusg command obtains user login names from the /etc/passwd file,
by default, and reports one record per user to standard output. The
command usually reads only the inodes of the specified file system.
The diskusg command is usually called from the dodisk shell procedure
when the cron daemon executes commands in the
/usr/spool/cron/crontabs/root file. You can also manually invoke the
If the diskusg command is executed from the dodisk command, its output
is directed to the /var/adm/dtmp file, which is used as input to the
acctdisk command to produce a total accounting record. This total
accounting record can be merged with other total accounting records to
produce a daily report. Note that if the -o option is specified with
the dodisk command, the acctdusg command is used instead of the diskusg
command. The acctdusg command provides a more thorough accounting of
disk usage than the diskusg command.
Records output by the diskusg command are in the following format:
user_ID login_name disk_blocks
The output contains the following information: Assigned user number
User login name Total number of disk blocks allocated to the user
This command can be used only for local devices.
The command's behavior when it encounters a nonexisting UFS file system
is different from its behavior when it encounters a nonexisting AdvFS
fileset. If the nonexisting file_spec is a UFS file system, the com‐
mand produces an error and continue to display output for other file
systems and filesets. If the missing file_spec is an AdvFS fileset, the
command exits without producing any output.
To manually invoke the diskusg command, you must be logged in as supe‐
ruser. For example, you could enter the following command:
# /usr/sbin/acct/diskusg /dev/rrz3a
0 root 63652
1 daemon 84
2 bin 71144
4 adm 976
5 uucp 3324
322 homer 2
521 whistler 2
943 cellini 363 1016 pollock 92 1098 hopper
317 To generate daily disk accounting information, add a line
similar to the following to the /usr/spool/cron/crontabs/root
file: 0 2 * * 4 /usr/sbin/acct/dodisk The previous example shows
a typical, periodically invoked command that the cron daemon
reads and executes. The time period is expressed by a 6-field
entry using the format:
mm hh dayofmonth month wkday command
The previous format shows the following information: The number
of minutes past the hour, from 0 to 59 The hour of the day in
24-hour clock notation The day of the month The month, from 1 to
12 The day or days of the week, from 0 to 6, where 0 is Sunday
and inclusive days are separated with a - (hyphen) The command
that the cron daemon must execute.
Unspecified times must use an * (asterisk) to define an empty
field. In the previous example, the dodisk shell procedure runs
at 02:00 hours (2) every Thursday (4). Usually, the dodisk
shell procedure calls the diskusg command to redirect its output
to a temporary file and then calls acctdisk to redirect disk
usage records from the temporary file as input to the
/var/adm/acct/nite/[filename] file as output. The file stored
in the /var/adm/acct/nite subdirectory is a permanent binary
record of disk usage for the specified period.
Specifies the command path. Accounting header files that define for‐
mats for writing accounting files. User database file.
Commands: acct(8), acctdisk(8), acctdusg(8), acctmerg(8), dodisk(8),