Unix command-line interface programs and shell builtins
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| Processes | |
| User environment | |
| Text processing | |
| Shell builtins | |
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| Miscellaneous | |
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| Developer(s) | AT&T Bell Laboratories |
|---|---|
| Initial release | November 1973 |
| Operating system | Unix and Unix-like, MSX-DOS |
| Type | Command |
The dump command is a program on Unix and Unix-like operating systems used to back up file systems. It operates on blocks, below filesystem abstractions such as files and directories. Dump can back up a file system to a tape or another disk. It is often used across a network by piping its output through bzip2 then SSH.
A dump utility first appeared in Version 6 AT&T UNIX.[1] A dump command is also part of ASCII's MSX-DOS2 Tools for MSX-DOS version 2.[2]
dump [-0123456789acLnSu] [-B records] [-b blocksize] [-C cachesize] [-D dumpdates] [-d density] [-f file | -P pipecommand] [-h level] [-s feet] [-T date] filesystem
$ dump -W | -w
