FWIW，下面的行工作在窗口和替换分号在我的路径变量换行。我正在使用安装在我的git bin目录下的工具。

echo %path% | sed -e $'s/;/\\n/g' | less

虽然我写这篇文章晚了，只是更新我的发现。这个答案只适用于Mac OS X。

$ sed 's/new/
> /g' m1.json > m2.json
sed: 1: "s/new/
/g": unescaped newline inside substitute pattern

在上面的命令中，我尝试用Shift+Enter添加新行，但没有工作。所以这一次我尝试了“转义”的“未转义换行”，因为错误告诉。

$ sed 's/new/\
> /g' m1.json > m2.json 

成功了!(适用于Mac OS X 10.9.3)

只是为了澄清:OSX上sed的手册页(10.8;达尔文内核版本12.4.0)说:

[…]

Sed正则表达式

 The regular expressions used in sed, by default, are basic regular expressions (BREs, see re_format(7) for more information), but extended
 (modern) regular expressions can be used instead if the -E flag is given.  In addition, sed has the following two additions to regular
 expressions:

 1.   In a context address, any character other than a backslash (``\'') or newline character may be used to delimit the regular expression.
      Also, putting a backslash character before the delimiting character causes the character to be treated literally.  For example, in the
      context address \xabc\xdefx, the RE delimiter is an ``x'' and the second ``x'' stands for itself, so that the regular expression is
      ``abcxdef''.

 2.   The escape sequence \n matches a newline character embedded in the pattern space.  You cannot, however, use a literal newline charac-
      ter in an address or in the substitute command.

[…]

所以我想一个人必须使用tr -如上所述-或者nitty

sed "s/,/^M
/g"

注意:你必须输入<ctrl>-v，<return>才能在vi编辑器中得到'^M'

使用ANSI-C引用字符串$'string'

您需要一个反斜杠转义的文字换行符来访问sed。 至少在bash中，$ "字符串将用真正的换行符替换\n，但随后您必须将sed看到的反斜杠加倍以转义换行符，例如:

echo "a,b" | sed -e $'s/,/\\\n/g'

注意，这并不适用于所有shell，但适用于最常见的shell。

$ echo $PATH | sed -e $'s/:/\\\n/g' 
/usr/local/sbin
/Library/Oracle/instantclient_11_2/sdk
/usr/local/bin

...

在莫哈韦对我有用

sed 's/,/\
/g'

适用于Mac OS X。