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1.4.8 df

NAME
 
df - summarize free disk space

SYNOPSIS
 
df [-aikPv] [-t fstype] [-x fstype] [-all] [-inodes] [-type=fstype] [-exclude-type=fstype] [-kilobytes] [-portabil- ity] [-print-type] [-help] [-version] [filename...]

DESCRIPTION
 
This documentation is no longer being maintained and may be inaccurate or incomplete. The Texinfo documentation is now the authoritative source. This manual page documents the GNU version of df. df displays the amount of disk space available on the filesystem containing each file name argument. If no file name is given, the space available on all currently mounted filesystems is shown. Disk space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used. If an argument is the absolute file name of a disk device node containing a mounted filesystem, df shows the space available on that filesystem rather than on the filesystem containing the device node (which is always the root filesystem). This version of df cannot show the space available on unmounted filesystems, because on most kinds of systems doing so requires very nonportable intimate knowledge of filesystem structures.

OPTIONS
 
-a,
-all Include in the listing filesystems that have 0 blocks, which are omitted by default. Such filesystems are typically special-purpose pseudo-filesystems, such as automounter entries. On some systems, filesystems of type ``ignore'' or ``auto'' are also omitted by default and included in the listing by this option.
-i,
-inodes List inode usage information instead of block usage. An inode (short for ``index node'') is a special kind of disk block that contains information about a file, such as its owner, permissions, timestamps, and location on the disk.
-k,
-kilobytes Print sizes in 1K blocks instead of 512-byte blocks. This overrides the environment variable POSIXLY_CORRECT. -P, -portability Use the POSIX output format. This is like the default format except that the information about each filesystem is always printed on exactly one line; a mount device is never put on a line by itself. This means that if the mount device name is more than 20 characters long (as for some net- work mounts), the columns are misaligned.
-T,
-print-type Print a type string for each filesystem. Any such printed filesystem type name may be used as an argument to either of the -type= or -exclude-type= options.
-t,
-type=fstype Limit the listing to filesystems of type fstype. Multiple filesystem types can be shown by giving multiple -t options. By default, all filesystem types are listed.
-x,
-exclude-type=fstype Limit the listing to filesystems not of type-T, -print-type Print a type string for each filesystem. Any such printed filesystem type name may be used as an argument to either of the -type= or -exclude-type= options.
-t,
-type=fstype Limit the listing to filesystems of type fstype. Multiple filesystem types can be shown by giving multiple -t options. By default, all filesystem types are listed.
-x,
-exclude-type=fstype Limit the listing to filesystems not of type fstype. Multiple filesystem types can be shown by giving multiple
-t
options. By default, all filesystem types are listed.
-x,
-exclude-type=fstype Limit the listing to filesystems not of
type
fstype. Multi- ple filesystem types can be eliminated by giving multiple -x options. By default, all filesystem types are listed.
-v
Ignored; for compatibility with System V versions of df.
-help
Print a usage message on standard output and exit successfully.
-version
Print version information on standard output then exit successfully.
EXAMPLES
 
$ df

Filesystem 1024-blocks Used Available Capacity Mounted on

/dev/sda1 870677 694211 131486 84% /

/dev/sda5 2314835 1368909 826244 62%

/usr /dev/sda6 101075 27046 68810 28% /var

$ df -i

Filesystem Inodes IUsed IFree %IUsed Mounted on

/dev/sda1 225280 3334 221946 1% /

/dev/sda5 600064 60812 539252 10% /usr

/dev/sda6 26104 343 25761 1% /var


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