[siva19185]

how to install software/patches on a remote linux machine..

[GNU-Fan]

Most GNU/Linux distributions come with a package manager that is able to download from an remote repository on the Internet.

In that case, there is no difference to installing it on a machine you sit in front to.

[bigtomrodney]

With a combination of ssh and your package manager you can do some pretty major system overhauls. What distro are you using?

[Freston]

Although it's not complicated, the exact procedure depends on your setup.

Things to consider
Where does the to-be-installed software come from. (ie Is it sitting on the remote machine, is it on the local machine, or do you have to fetch it from somewhere?)
How do you access your remote machine? ssh, X over ssh, or some other means?

If you post here what you have and what you want, then maybe we can help. It's also good to know your level of experience with managing remote machines.