I am trying to install Magento 2.2 patch on my site.
Showing error like this.
root@server www/html# patch -p1 < PRODSECBUG-2198-2.2-CE-2019-03-25-08-43-16.patch -bash: patch: command not found
How to proceed further.?
You do not have the patch program on your server. It needs installed based on your current package manager for example.
sudo apt-get update && sudo apt-get install patch
Be very careful running patches in production, you should be versioning all your changes. :)