通过mac打包，然后scp到ubuntu过程后，出现以下错误：

 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'
 tar: Ignoring unknown extended header keyword `SCHILY.dev'
 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'
 tar: Ignoring unknown extended header keyword `SCHILY.dev'
 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'
 tar: Ignoring unknown extended header keyword `SCHILY.dev'
 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'
 tar: Ignoring unknown extended header keyword `SCHILY.dev'
 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'
 tar: Ignoring unknown extended header keyword `SCHILY.dev'
 tar: Ignoring unknown extended header keyword `SCHILY.ino'
 tar: Ignoring unknown extended header keyword `SCHILY.nlink'

解决方案如下： 

 1：  brew install gnu-tar

 2:    PATH="/usr/local/opt/gnu-tar/libexec/gnubin:$PATH"

这样就可以继续 tar czf  aa.tar.gz了