How do I find the file handles that my process has opened in Linux?

Question

When we perform a fork in Unix, open file handles are inherited, and if we don\'t need to use them we should close them. However, when we use libraries, file handles may be open

Answer 1

Just a link, but it seems helpful: How many open files? at netadmintools.com. It seems to use /proc investigations to learn about a process' open files, not sure if that is the only way or if there is an API. Parsing files for this type of information can be a bit ... messy. Also, /proc might be deprecated too, something to check for.