history of a file

Hi,
Is it possible to trace out the history of file in unix?
iam using HP-Ux11,i have a file modified by some one with the common account.is it possible to get the IP or machine name of the user who modified this?how to trace out this?
Thanks for help

Base unix does not provide this capability. There are some security audit packages you can install that do.

you can list users shell history files for the file name, if you have a general idea when it had happened, try "last" to figre out who was online then.