Hi,
I logged into a UNIX system as user ABC.
I do not have root previleges and also do not have root password.

I am executing few commands as:
ABC****>sudo su - XYZ
XYZ****>rm file1.txt
XYZ****>exit
ABC****>

Now I want to execute all these commands from a .sh file ( or in any other way). I put all these commands in a test.sh and executed as

ABC****>./test.sh

the problem here is that , only first command is executed and control is gone to
XYZ****>

When I entered exit as
XYZ****>exit

the remaining commands in the test.sh started the execution as

ABC****>rm file1.txt
No Permission.
ABC****>exit

How should I execute the "rm file1.txt" as a XYZ user?

Why don't you invoke find to get the names of every file you are going to want to delete, park the name in a script, sudo to XYZ, run the script.

Or sudo to XYZ ,cd to the directory with a problem, then You will see lots of errors for files XYZ does not own. But now all of XYZ's files in the whole directory tree belong to ABC.

I did this, but got this error :
Permission denied