我想删除特定文件夹中大于2MB的文件。所以我跑了：
find . -size +2M
我得到了两个文件的清单
./a/b/c/file1
./a/f/g/file2
所以我然后运行：
find . -size +2M -exec rm ;
我收到错误消息 Find: missing argument to -exec
我在手册页中检查了语法，并说 -exec command ;
所以我尝试
find . -size +2M -exec rm {} +
而且有效。据我所知，{}使它执行类似命令rm file1 file2代替rm file1; rm file2;。
那么为什么第一个不起作用？
回答：
我想我只需要几次RTFM才能最终了解它在说什么。即使第一个示例未显示{}，在所有情况下都必须使用大括号。然后添加\; 或+，具体取决于所需的方法。不要只阅读标题。还要阅读说明。得到它了。
Answers:
-exec rm {} \;
你可以使用..男人找到
-exec command ;
Execute command; true if 0 status is returned. All following arguments to find are taken to be arguments to the command until
an argument consisting of `;' is encountered. The string `{}' is replaced by the current file name being processed everywhere
it occurs in the arguments to the command, not just in arguments where it is alone, as in some versions of find. Both of these
constructions might need to be escaped (with a `\') or quoted to protect them from expansion by the shell. See the EXAMPLES
section for examples of the use of the -exec option. The specified command is run once for each matched file. The command is
executed in the starting directory. There are unavoidable security problems surrounding use of the -exec action; you should
use the -execdir option instead.
-exec command {} +
This variant of the -exec action runs the specified command on the selected files, but the command line is built by appending
each selected file name at the end; the total number of invocations of the command will be much less than the number of matched
files. The command line is built in much the same way that xargs builds its command lines. Only one instance of `{}' is
allowed within the command. The command is executed in the starting directory.
为了提高效率，通常最好使用xargs：
$ find /path/to/files -size +2M -print0 | xargs -0 rm