shellɾ³ýµ±Ç°Ä¿Â¼¼°µÝ¹éĿ¼ÏÂÎļþÖ¸¶¨×Ö·û´®

#!/bin/bash
 function read_dir(){
for file in `ls $1`
     do
         if [ -d $1"/"$file ]  
         then
             read_dir $1"/"$file
         else
             sed -i /'Hello'/d $1"/"$file
             # Èç¹ûҪɾ³ýÖ¸¶¨µÄ×Ö·û´®"Hello"ÐÐ.
         fi
     done
 }
 read_dir $1
 # ÃüÁîÐÐÀïÃæÇÃÈë:bash test.sh ./   
 # ¹¦ÄÜ:ɾ³ýµ±Ç°Ä¿Â¼¼°µÝ¹éĿ¼ÏÂÎļþÀï³öÏÖ"Hello"×Ö·û´®µÄÐÐ 

ÌâÔ´£º
http://blog.csdn.net/lin111000713/article/details/45232177
http://blog.163.com/sweet_hard/blog/static/66656838201162294812840/