Help with using sudo in a unix shell script?

I am trying to use sudo command in unix shell script. Its that it will do sudo and then search a file in the directory and then come out of the sudo account

my account = saurav

here is the script code
********************************
sudo -u abcd -s
cd /application/somefolder/
id
grep jdbcracle:thin server.properties

********************************************

now how do i come out of the account to which i sudo, i can always use CTRL+D / ctrl + x from the prompt, but what should be used in the script to get out of the account back to my own account.

which is from abcd to saurav
Well i cannot change the sudoers property, since i am not the admin/root

This is the only way to work out in my environment, and using exit in the script just closes the script it doesnt come out of the sudo user.

why must you sudo as a user, then change directories, then check the id, then do a grep? shouldn't you do it all in one go?

if you setup your sudoers file correctly, the above could be accomplished with

sudo grep jdbcracle:thin /app/folder/server.properties

If you really need to use your version, try
exit

or else try su saurav



Let me know if that works or not, and feel free to ask more questions
-Eric