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unison — Bidirectional file synchronisation tool. More information: <https://github.com/bcpierce00/unison>.

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the unison command: Bidirectional file synchronisation tool. More information: <https://github.com/bcpierce00/unison>.

Solution

unison — Bidirectional file synchronisation tool. More information: <https://github.com/bcpierce00/unison>.

Sync two directories (creates log first time these two directories are synchronized):

unison {{path/to/directory_1}} {{path/to/directory_2}}

Automatically accept the (non-conflicting) defaults:

unison {{path/to/directory_1}} {{path/to/directory_2}} -auto

Ignore some files using a pattern:

unison {{path/to/directory_1}} {{path/to/directory_2}} -ignore {{pattern}}

View documentation:

unison -doc {{topics}}

Code Snippets

Sync two directories (creates log first time these two directories are synchronized)

unison {{path/to/directory_1}} {{path/to/directory_2}}

Automatically accept the (non-conflicting) defaults

unison {{path/to/directory_1}} {{path/to/directory_2}} -auto

Ignore some files using a pattern

unison {{path/to/directory_1}} {{path/to/directory_2}} -ignore {{pattern}}

View documentation

unison -doc {{topics}}

Context

tldr-pages: common/unison

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