也许那里有一个(不可见的)字符，不应存在.尝试在将要运行的环境(例如Linux)中从头开始再次键入它，或使用此命令 od -c/folder/script.sh 来显示那些令人讨厌的字符.

Maybe there is a (invisible) character there that should not be there. Try typing it again from scratch in the environment that it will run (ex: Linux) or use this command od -c /folder/script.sh to reveal those pesky characters.