If you're like me and work for a company who has many linux admins all logging into servers and then su'ing to root, you may find this tip beneficial. It is simply 3 lines that you add to root's .bash_profile which will keep separate history files for each admin that su's to root and the commands they ran. It will allow you to go back and see what the user did as root.
Read more »Keeping separate history files for users who su to root
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