diff

compare files line by line Usage: diff [OPTION]... FILES

Options

Option	Description
--normal	output a normal diff (the default)
-q, --brief	report only when files differ
-s, --report-identical-files	report when two files are the same
-c, -C NUM, --context[=NUM]	output NUM (default 3) lines of copied context
-u, -U NUM, --unified[=NUM]	output NUM (default 3) lines of unified context
-r, --recursive	recursively compare any subdirectories found
-a, --text	treat all files as text