On FreeBSD 8.1 how to view history command for user root. Detail many sesion , because user root use by 3 people system admin.
You don't do that. What you do is setup sudo and then make your 3 admins log in using normal user accounts and use sudo to run commands as root. Sudo when correctly set up will allow your admins to carry out their duties and will log all relevant information to the system log files for later auditing.