EndOfLine

EndOfLine represents the end of a line in a string for purposes of matching in StringExpression.

Examples

Match at end of line:

StringCases["line1\nline2\n", __ ~~ EndOfLine]
(* {"line1", "line2"} *)

Replace end of lines:

StringReplace["abc\ndef", EndOfLine -> ";"]

Please visit the official Wolfram Language Reference for more details.