df(1)df(1)Namedf - display free and used disk space
Syntaxdf [-i] [-l] [-n] [filesystem...] [file...]
The command displays the amount of disk space available on the speci‐
fied file system, for example, It also displays the amount of available
disk space on the file system in which the specified file is contained,
for example, If a device is given that has no file systems mounted on
it, displays the information for the root file system. Without any
arguments or options, displays shows all mounted filesystems, including
those manually mounted without use of the file. The numbers are
reported in kilobytes.
Unless the -n option is specified, updates the statistics stored in
memory for the file system specified, before it returns the informa‐
Options-i Also report the number of used and free inodes.
-l Reports on locally mounted disks only.
-n Do not update the file system statistics stored in memory.
Instead, return whatever statistics are stored in memory. This
prevents from hanging in the event that a server containing the
specified file system is down.
You cannot use the command to find free space on an unmounted file sys‐
tem using the block or character special device name. Instead, use the
Filesystem Total kbytes kbytes %
node kbytes used free used Mounted on
/dev/ra1a 7429 2085 4602 31% /tmp
/dev/ra0e 30519 14817 12651 54% /usr/spool
/dev/ra0h 313233 122858 159052 44% /usr/staff1
The total disk space is the total space that was created during the
making of the file system. The addition of the used space, the free
space and a percentage of reserved space is the total space. The
default value for the reserved space is 10%.
List of mounted file systems
See Alsogetmnt(2), fstab(5), dumpfs(8), icheck(8), mkfs(8), newfs(8), quot(8)df(1)