ls -R | grep ":$" | sed -e ‘s/:$//‘ -e ‘s/[^-][^\/]*\//--/g‘ -e ‘s/^/ /‘ -e ‘s/-/|/‘It seems useful as a upgrade version of ‘ls -R‘
Unix/Linux 'dirctory tree' command.
原文：http://www.cnblogs.com/Geek-GeNE/p/4043605.html
