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BORG-DIFF(1) borg backup tool BORG-DIFF(1)


borg-diff - Diff contents of two archives


borg [common options] diff [options] REPO::ARCHIVE1 ARCHIVE2 [PATH...]


This command finds differences (file contents, user/group/mode) between archives.

A repository location and an archive name must be specified for REPO::ARCHIVE1. ARCHIVE2 is just another archive name in same repository (no repository location allowed).

For archives created with Borg 1.1 or newer diff automatically detects whether the archives are created with the same chunker params. If so, only chunk IDs are compared, which is very fast.

For archives prior to Borg 1.1 chunk contents are compared by default. If you did not create the archives with different chunker params, pass --same-chunker-params. Note that the chunker params changed from Borg 0.xx to 1.0.

See the output of the "borg help patterns" command for more help on exclude patterns.


See borg-common(1) for common options of Borg commands.


repository location and ARCHIVE1 name
ARCHIVE2 name (no repository location allowed)
paths of items inside the archives to compare; patterns are supported

optional arguments

only consider numeric user and group identifiers
Override check of chunker parameters.
Sort the output lines by file path.

Exclusion options

-e PATTERN, --exclude PATTERN
exclude paths matching PATTERN
--exclude-from EXCLUDEFILE
read exclude patterns from EXCLUDEFILE, one per line
--pattern PATTERN
experimental: include/exclude paths matching PATTERN
--patterns-from PATTERNFILE
experimental: read include/exclude patterns from PATTERNFILE, one per line


$ borg init -e=none testrepo
$ mkdir testdir
$ cd testdir
$ echo asdf > file1
$ dd if=/dev/urandom bs=1M count=4 > file2
$ touch file3
$ borg create ../testrepo::archive1 .
$ chmod a+x file1
$ echo "something" >> file2
$ borg create ../testrepo::archive2 .
$ rm file3
$ touch file4
$ borg create ../testrepo::archive3 .
$ cd ..
$ borg diff testrepo::archive1 archive2
[-rw-r--r-- -> -rwxr-xr-x] file1
   +135 B    -252 B file2
$ borg diff testrepo::archive2 archive3
added           0 B file4
removed         0 B file3
$ borg diff testrepo::archive1 archive3
[-rw-r--r-- -> -rwxr-xr-x] file1
   +135 B    -252 B file2
added           0 B file4
removed         0 B file3




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