latex链接外部文件

Local file 

Files can also be linked using the url or the href commands. You simply 
have to add the string run: at the beginning of the link string: 

\url{run:/path/to/my/file.ext} 
\href{run:/path/to/my/file.ext}{text displayed} 

You can use relative paths to link documents near the location of your 

current document; in order to do so, use the standard Unix-like notation 
(./ is the current directory, ../ is the previous directory, etc.) 

就是说要链接到外部文件的话要加上run:

后面跟的是文件的地址，是MAC的话就用UNIX的./代表当前目录