On Wed, Aug 8, 2012 at 12:56 PM, Heng Su <ste.suheng at gmail.com> wrote: > I want to protect the history file from deleted for all users except > user 'root' can do it, is that possible? > For my server, many users can log in with root from remote through > ssh, so I can not trace which guy do wrong things. So I decide to create > new account for every users and let them use 'sudo' then I can trace > which guy typed which command and what he did. However, even if I create > new account for every user, they also can delete the history of them > self easily. > > How should I do. I believe everyone encountered such things > normally. I think there is a gracefully solution for it as I am not > experience on server manage. So any suggestions for how to trace user > like to write down which user did as an audit trail and let it can not > deletable exclude root user? > > Thanks! > Su Heng Capturing history files is error-prone and a very bad way to approach this problem. You should instead look into using process accounting, provided by the psacct package. You can read about it here: http://www.cyberciti.biz/tips/howto-log-user-activity-using-process-accounting.html ❧ Brian Mathis