meld
meld
TLDR
Start meld
$ meld
Compare 2 files
$ meld [path/to/file_1] [path/to/file_2]
Compare 2 directories
$ meld [path/to/directory_1] [path/to/directory_2]
Compare 3 files
$ meld [path/to/file_1] [path/to/file_2] [path/to/file_3]
Open a comparison as a new tab in a pre-existing meld instance
$ meld --newtab [path/to/file_1] [path/to/file_2]
Compare multiple sets of files
$ meld --diff [path/to/file_1] [path/to/file_2] --diff [path/to/file_3] [path/to/file_4]