Return symbol

換行符號 (Return symbol, line terminators)

• On Win : CRLF = \r\n
• On Linux & macOS : LF = \n, CR = \r

如何看到換行符號

• Notepad++ On Win 選單: 檢視: 特殊字元: 顯示行尾字元 (EOL)
• file (command): file filename.txt on Linux , macOS & Cygwin on Win

檔案內容	File command 偵測結果
換行符號是 CRLF = \r\n	UTF-8 Unicode text, with CRLF line terminators
換行符號是 LF = \n	UTF-8 Unicode text
換行符號是 CR = \r	UTF-8 Unicode text, with CR line terminators
換行符號夾雜 \r\n 和 \r	UTF-8 Unicode text, with CRLF, CR line terminators
無內容的空檔案	empty

Related articles

• Carriage return - Wikipedia
• 回車鍵 - 維基百科，自由的百科全書
• 陳雲濤的部落格: 筆記 CRLF跟LF之區別 --- 隱形的 bug:「CRLF才是真正的打字機運作方式，你可以想像：打字機打到最右邊，要先return到最左邊之後，再往下一行，所以是CRLF ... ...」
• Differences in end of line characters Mac, Windows, and Linux

References