dump (program)

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.

dump
Developer(s)AT&T Bell Laboratories
Initial releaseNovember 1973 (1973-11)
Operating systemUnix and Unix-like, MSX-DOS
TypeCommand

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]

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
gollark: I blame whoever didn't use potatOS enough.
gollark: Mostly with numbers in them, probably as people got the things wrong.
gollark: I found about 50 via nonexhaustive search.
gollark: I know, right?
gollark: https://0t.lt/c

See also
  • restore (program)
  • tar (file format)
  • cpio
  • rsync

References
  1. "dump.c". Bitsavers' Software Archive. Retrieved 8 March 2013.
  2. MSX-DOS2 Tools User's Manual by ASCII Corporation
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