granting permission to tomcat

[vinodramu]

I need to find out the disk usage using the command du -chs directoryName.
I'm executing a shell script using java web application.
For this I need to grand the permission to "tomcat" for accessing the directory and shell script.

For eg:
My shell script is in the directory /var/lib/tomcat-6/webapps/webapplictionPRJ/scripts/
and I need to find out the disc usage of the directory /var/vpopmail/testDirectory.
The owner of directory '/var/vpopmail' is root and owner of directory '/var/vpopmail/testDirectory'
is vpopmail

Can anyone help me in granting permission to tomcat for accessing the directory using "visudo".

[timeBandit]

Split from connecting to an ip masq subnet where it was off-topic. In addition, the same question was posted minutes earlier in another forum.

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