Dump (Unix)

dumpDeveloper(s)| AT&T Bell Laboratories

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Initial release| November 1973; 52 years ago (1973-11)
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]

## Contents

* 1 Usage
* 2 See also
* 3 References
* 4 External links

## Usage

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

## See also

* restore (program)
* tar (file format)
* cpio
* rsync

## References

1. ↑ "dump.c". Bitsavers' Software Archive. http://bitsavers.informatik.uni-stuttgart.de/bits/Interdata/32bit/unix/univWollongong_v6/interdata_v6/usr/source/etc/dump.c.
2. ↑ MSX-DOS2 Tools User's Manual by ASCII Corporation

## External links

* Home page of the Linux Ext2 filesystem dump/restore utilities

* v
* t
* e

Unix command-line interface programs and shell builtins

File system|

* cat
* chmod
* chown
* chgrp
* cksum
* cmp
* cp
* dd
* du
* df
* file
* fuser
* ln
* ls
* mkdir
* mv
* pax
* pwd
* rm
* rmdir
* split
* tee
* touch
* type
* umask

Processes|

* at
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* crontab
* fg
* kill
* nice
* ps
* time

User environment|

* env
* exit
* logname
* mesg
* talk
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* uname
* who
* write

Text processing|

* awk
* basename
* comm
* csplit
* cut
* diff
* dirname
* ed
* ex
* fold
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* iconv
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* m4
* more
* nl
* paste
* patch
* printf
* sed
* sort
* strings
* tail
* tr
* uniq
* vi
* wc
* xargs

Shell builtins|

* alias
* cd
* echo
* test
* unset
* wait

Searching|

* find
* grep

Documentation|

* man

Software development|

* ar
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Miscellaneous|

* bc
* cal
* expr
* lp
* od
* sleep
* true and false

* Categories
* Standard Unix programs
* Unix SUS2008 utilities
* List

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