who is logged in using sftp
i'm letting some friends login to my linux server with sftp (ssh). neither 'who','w', or 'finger' lets me see who is logged in using sftp. how can i make these users show? i can see they logged in using some of my logging scripts, but i would like to be able to see what they're doing, what they're accessing and so on. is there any way i can do this?