Shell Programming and Scripting

I have a script called " passwd_status " which gives the passwd-s status of my servers.
the script output is like below

Code:

password status for A:
 abc ks 10/05/115 1 30 ps
  password status for B: 
abc ks 09/25/115 1 30 ps 
 password status for C: 
abc ks 10/10/115 1 30 ps

Now , i want to write a script that for 25 days the password should change automatically. But i am finding difficulty in subtracting the dates . because the date format is like

Code:

"%m%d%1y"

. So how can i subtract this format date with current date and then compare the difference with 25 .

can anyone help me in this.

Is there any particular reason you created a new thread for the already existing one?