Displaying Disk Usage Statistics (df)
Use the df command to show the amount of free disk space on each mounted disk. The usable disk space reported by df reflects only 90% of full capacity, as the reporting statistics leave a 10% head room above the total available space. This head room normally stays empty for better performance.
The percentage of disk space actually reported by df is used space divided by usable space.
If the file system is above 90% capacity, transfer files to a disk that is not as full by using cp, or to a tape by using tar or cpio; or remove the files.
For a detailed description of this command, refer to the df(1M) man page.
How to Display File System Information (df)
Use the df -k command to display file system information in Kbytes.
$ df -k Filesystem kbytes used avail capacity Mounted on /dev/dsk/c0t3d0s0 192807 40231 133296 24% / |
The table below describes the df -k command output.
Table 36-6 Output From the df -k Command|
Field Name |
Description |
|---|---|
|
kbytes |
Total size of usable space in the file system |
|
used |
Amount of space used |
|
avail |
Amount of space available for use |
|
capacity |
Amount of space used, as a percent of the total capacity |
|
mounted on |
Mount point |
Example--Displaying File System Information
The following example shows output of the df -k command.
$ df -k /dev/dsk/c0t0d0s0 192807 49043 124484 29% / /dev/dsk/c0t0d0s6 1190551 680444 450580 61% /usr /proc 0 0 0 0% /proc fd 0 0 0 0% /dev/fd mnttab 0 0 0 0% /etc/mnttab swap 198056 0 198056 0% /var/run swap 198064 8 198056 1% /tmp /dev/dsk/c0t0d0s5 192807 2031 171496 2% /opt /dev/dsk/c0t0d0s7 217191 9 195463 1% /export/home venus:/usr/dist 20612581 13237316 6963015 66% /usr/dist |
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