unison
Bidirectional file synchronisation tool.
TLDR
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]
Show documentation
$ unison -doc [topics]
