сравнить два файла (compare two files)
Имя (Name)
diff — compare two files
Синопсис (Synopsis)
diff [-c|-e|-f|-u|-C n|-U n] [-br] file1 file2
Описание (Description)
The diff utility shall compare the contents of file1 and file2
and write to standard output a list of changes necessary to
convert file1 into file2. This list should be minimal. No output
shall be produced if the files are identical.
