This table summarizes the commands available for displaying information about file size and disk space.
|
Command |
Description |
Man Page |
|---|---|---|
|
df |
Reports the number of free disk blocks and files |
df ( 1M ) |
|
du |
Summarizes disk space allocated to each subdirectory |
du ( 1 ) |
|
find |
Searches recursively through a directory based on the size specified
with the |
find ( 1 ) |
|
ls |
Lists the size of a file in the power of 1024 scaling |
ls ( 1 ) |
How to Display Information About Files and Disk Space
Display information about how disk space is used by using the df command.
$df[directory] [-h] [-t]
With no options, lists all mounted file systems and their device names, the number of 512-byte blocks used, and the number of files.
directory
Specifies the directory whose file system you want to check.
h
Displays disk space in the power of 1024 scaling.
t
Displays the total blocks as well as the blocks used for all mounted file systems.
Example 13.1. Displaying Information About File Size and Disk Space
In the following example, all the file systems listed are locally
mounted except for /usr/dist, which is mounted remotely
from the system venus.
$ df
/ (/dev/dsk/c0t0d0s0 ): 101294 blocks 105480 files
/devices (/devices ): 0 blocks 0 files
/system/contract (ctfs ): 0 blocks 2147483578 files
/proc (proc ): 0 blocks 1871 files
/etc/mnttab (mnttab ): 0 blocks 0 files
/etc/svc/volatile (swap ): 992704 blocks 16964 files
/system/object (objfs ): 0 blocks 2147483530 files
/usr (/dev/dsk/c0t0d0s6 ): 503774 blocks 299189 files
/dev/fd (fd ): 0 blocks 0 files
/var/run (swap ): 992704 blocks 16964 files
/tmp (swap ): 992704 blocks 16964 files
/opt (/dev/dsk/c0t0d0s5 ): 23914 blocks 6947 files
/export/home (/dev/dsk/c0t0d0s7 ): 16810 blocks 7160 files
Example 13.2. Displaying File Size Information in 1024 Bytes
In the following example, file system information is displayed in 1024 bytes.
$ df -h
Filesystem size used avail capacity Mounted on
/dev/dsk/c0t0d0s0 249M 200M 25M 90% /
/devices 0K 0K 0K 0% /devices
ctfs 0K 0K 0K 0% /system/contract
proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
swap 485M 376K 485M 1% /etc/svc/volatile
objfs 0K 0K 0K 0% /system/object
/dev/dsk/c0t0d0s6 3.2G 2.9G 214M 94% /usr
fd 0K 0K 0K 0% /dev/fd
swap 485M 40K 485M 1% /var/run
swap 485M 40K 485M 1% /tmp
/dev/dsk/c0t0d0s5 13M 1.7M 10M 15% /opt
/dev/dsk/c0t0d0s7 9.2M 1.0M 7.3M 13% /export/home
Although /proc and /tmp are
local file systems, they are not UFS file systems. /proc is
a PROCFS file system, /var/run and /tmp are
TMPFS file systems, and /etc/mnttab is an MNTFS file
system.
Example 13.3. Displaying Total Number of Blocks and Files Allocated for a File System
The following example shows a list of all mounted file systems, device names, total 512-byte blocks used, and the number of files. The second line of each two-line entry displays the total number of blocks and files that are allocated for the file system.
$ df -t
/ (/dev/dsk/c0t0d0s0 ): 101294 blocks 105480 files
total: 509932 blocks 129024 files
/devices (/devices ): 0 blocks 0 files
total: 0 blocks 113 files
/system/contract (ctfs ): 0 blocks 2147483578 files
total: 0 blocks 69 files
/proc (proc ): 0 blocks 1871 files
total: 0 blocks 1916 files
/etc/mnttab (mnttab ): 0 blocks 0 files
total: 0 blocks 1 files
/etc/svc/volatile (swap ): 992608 blocks 16964 files
total: 993360 blocks 17025 files
/system/object (objfs ): 0 blocks 2147483530 files
total: 0 blocks 117 files
/usr (/dev/dsk/c0t0d0s6 ): 503774 blocks 299189 files
total: 6650604 blocks 420480 files
/dev/fd (fd ): 0 blocks 0 files
total: 0 blocks 31 files
/var/run (swap ): 992608 blocks 16964 files
total: 992688 blocks 17025 files
/tmp (swap ): 992608 blocks 16964 files
total: 992688 blocks 17025 files
/opt (/dev/dsk/c0t0d0s5 ): 23914 blocks 6947 files
total: 27404 blocks 7168 files
/export/home (/dev/dsk/c0t0d0s7 ): 16810 blocks 7160 files
total: 18900 blocks 7168 files