vim中的命令行 %! 是啥意思？

:%! command

pipes the current file's contents to command's stdin, and replaces the file's contents with command's stdout.

So, :%! sort is pretty much the same as (from a shell) cat file | sort > tmp && mv tmp file.

 

来源：https://vi.stackexchange.com/questions/10098/what-does-mean