BASH:::How to match a string str inside double square brackets in bash.ex matching str inside [[str]] : I have a file with following data.  
  
 [[Public IP Addresses ]]  
// Here, IP addresses will   
 IPv6 display format.  
[LINK_7]  
linkNum=7.  
  
Here i have to extract "Public IP Addresses".
 I have tried lot of options in vain. Some help regarding this is appreciated.


 

