Linux Command Directory
This directory of Linux commands is from Linux in a Nutshell, 5th Edition.
Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.
df [options] [name]
Report the amount of free disk space available
Include empty filesystems (those with 0 blocks).
Show space as n-byte blocks.
Print sizes in a format friendly to human readers (e.g., 1.9G instead of 1967156).
Like -h, but show as power of 1000 rather than 1024.
Report free, used, and percent-used inodes.
Print sizes in kilobytes.
Show local filesystems only.
Print sizes in megabytes.
Show results without invoking sync first (i.e., without flushing the buffers). This is the default.
Use POSIX output format (i.e., print information about each filesystem on exactly one line).
Invoke sync (flush buffers) before getting and showing sizes.
Show only type filesystems.
Print the type of each filesystem in addition to the sizes.
Show only filesystems that are not of type type.
Print help message and then exit.
Print the version and then exit.