find: paths must precede expression问题及解决

用find命令查找时
例如命令

　　

会出错，查文档找出
find: paths must precede expression
Usage: find [-H] [-L] [-P] [-Olevel] [-D help|tree|search|stat|rates|opt|exec]
[path…] [expression]
This happens because *.c has been expanded by the shell resulting in find
actually receiving a command line like this:

　　

   find . -name bigram.c code.c frcode.c locate.c -print

That command is of course not going to work. Instead of doingthings
this way, you should enclose the pattern in quotes or escape the wildcard:

     $ find . -name '*.c' -print
     或
     $ find . -name \*.c -print

   即出现这个提示是因为星号代表为当前目录下所有的文件，然后被当做shell展开
   这就是网上说的多文件的查找的时候需要增加单引号