How do I get the path of a process in Unix / Linux

Question

In Windows environment there is an API to obtain the path which is running a process. Is there something similar in Unix / Linux?

Or is there some other way to do th

Answer 1

On Linux, the symlink /proc//exe has the path of the executable. Use the command readlink -f /proc//exe to get the value.

On AIX, this file does not exist. You could compare cksum and cksum /proc//object/a.out.