路径取基名和目录名

取出路径基名和目录名

 #echo  "/etc/rc.d/init.d/functions" | egrep -o '[^/]+/?$'|egrep -o '^[^/]+'  

 #echo  "/etc/rc.d/init.d/functions" | egrep -o '[^/]+/?$'

 #等于 basename /etc/rc.d/init.d/functions

 

 

 

 

 

 

 

 #echo  "/etc/rc.d/init.d/functions" | egrep -o '^[/].*/'

#等同于 dirname /etc/rc.d/init.d/funtions