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DF(1) FreeBSD General Commands Manual DF(1) NAME df -- display free disk space SYNOPSIS df [-b | -h | -H | -k | -m | -P] [-ailn] [-t type] [file | filesystem ...] DESCRIPTION The df utility displays statistics about the amount of free disk space on the specified file system or on the file system of which file is a part. Values are displayed in 512-byte per block counts. If neither a file or a file system operand is specified, statistics for all mounted file sys- tems are displayed (subject to the -t option below). The following options are available: -a Show all mount points, including those that were mounted with the MNT_IGNORE flag. -b Use 512-byte blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environment. -g Use 1073741824-byte (1-Gbyte) blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environment. -H "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte in order to reduce the number of digits to three or less using base 10 for sizes. -h "Human-readable" output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte in order to reduce the number of digits to three or less using base 2 for sizes. -i Include statistics on the number of free inodes. -k Use 1024-byte (1-Kbyte) blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environ- ment. -l Only display information about locally-mounted file systems. -m Use 1048576-byte (1-Mbyte) blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environ- ment. -n Print out the previously obtained statistics from the file sys- tems. This option should be used if it is possible that one or more file systems are in a state such that they will not be able to provide statistics without a long delay. When this option is specified, df will not request new statistics from the file sys- tems, but will respond with the possibly stale statistics that were previously obtained. -P Use POSIX compliant output of 512-byte blocks rather than the default. Note that this overrides the BLOCKSIZE specification from the environment. -t Only print out statistics for file systems of the specified types. More than one type may be specified in a comma separated list. The list of file system types can be prefixed with ``no'' to specify the file system types for which action should not be taken. For example, the df command: df -t nonfs,nullfs lists all file systems except those of type NFS and NULLFS. The lsvfs(1) command can be used to find out the types of file sys- tems that are available on the system. ENVIRONMENT BLOCKSIZE If the environment variable BLOCKSIZE is set, the block counts will be displayed in units of that size block. BUGS The -n and -t flags are ignored if a file or file system is specified. SEE ALSO lsvfs(1), quota(1), fstatfs(2), getfsstat(2), statfs(2), getmntinfo(3), fstab(5), mount(8), quot(8) HISTORY A df command appeared in Version 1 AT&T UNIX. FreeBSD 11.1 May 8, 1995 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | BUGS | SEE ALSO | HISTORY
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