18/11/07 21:01:40.12 XzpCa+6s0.net
>>546
「echo "echo \"Hello, world"'!'"\""」とかどうだろう。
参考: URLﾘﾝｸ(www.gnu.org)
History expansions are introduced by the appearance of the history expansion character, which is ‘!’ by default. Only ‘\’ and ‘'’ may be used to escape the history expansion character,
but the history expansion character is also treated as quoted if it immediately precedes the closing double quote in a double-quoted string.