Use the df command to show the amount of free
disk space on each mounted disk. The usable disk
space that is reported by df reflects only 90 percent of
full capacity, as the reporting statistics allows for 10 percent above the
total available space. This head room normally stays
empty for better performance.
The percentage of disk space actually reported by the df command is used space divided by usable space.
If the file system exceeds 90 percent capacity, you could transfer files to a disk that is not as full by using the cp command. Alternately, you could transfer files to a tape by using the tar or cpio commands. Or, you could remove the files.
For a detailed description of this command, see the df ( 1M ) man page.
How to Display Disk Space Information (df -k)
Use the df -k command to display disk space information in Kbytes.
$ df -k
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t3d0s0 192807 40231 133296 24% /
Example 20.4. Displaying File System Information
The following example shows the output from the df -k command.
$ df -k
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t0d0s0 254966 204319 25151 90% /
/devices 0 0 0 0% /devices
ctfs 0 0 0 0% /system/contract
proc 0 0 0 0% /proc
mnttab 0 0 0 0% /etc/mnttab
swap 496808 376 496432 1% /etc/svc/volatile
objfs 0 0 0 0% /system/object
/dev/dsk/c0t0d0s6 3325302 3073415 218634 94% /usr
fd 0 0 0 0% /dev/fd
swap 496472 40 496432 1% /var/run
swap 496472 40 496432 1% /tmp
/dev/dsk/c0t0d0s5 13702 1745 10587 15% /opt
/dev/dsk/c0t0d0s7 9450 1045 7460 13% /export/home
The following table describes the output of the df -k command.
|
Field Name |
Description |
|---|---|
|
|
Total size of usable space in the file system |
|
|
Amount of space used |
|
|
Amount of space available for use |
|
|
Amount of space used, as a percentage of the total capacity |
|
|
Mount point |