need help to install ZCS Web Client

You don't need to put you name in the thread title, I'll remove it.

Quote:

Originally Posted by leorzahavi

Myself Leor Zahavi, facing difficulties while installing ZCS Web Client on Ubuntu.

You don't install the 'web client', you actually install the comp Zimbar Collaboration Server.

Quote:

Originally Posted by leorzahavi

Please provide some installation guide to install ZCS Web Client on my Ubuntu OS.

There are details on how to install ZCS in the Product Documentation and plenty of excellent instructiosn in the forums if you search for them.