Пользовательские команды

---

  Prolog  |  Name  |    Synopsis    |  Description  |  Options  |  Operands  |  Stdin  |  Input files  |  Environment variables  |  Asynchronous events  |  Stdout  |  Stderr  |  Output files  |  Extended description  |  Exit  |  Consequences of errors  |  Application usage  |  Examples  |  Rationale  |  Future directions  |  See also  |

diff [-c|-e|-f|-u|-C n|-U n] [-br] file1 file2

Исходный текст на man7.org