mbl900@anusf.anu.edu.au (Mathew BM LIM) (04/03/91)
Is SysVR4 process accounting done on a per UID or a per user name basis? That is, if I have 2 user names, mbl900 and mbl901 who share the same UID, 101, then will my process accounting records show usage divided into mbl900 and mbl901, or will it lump both together into the UID 101? Thanks -- --- Mathew Lim, Unix Systems Programmer, ANU Supercomputer Facility, ANU, Australia. Telephone : +61 6 249 2750 | ACSnet : Mathew.BM.Lim@anu.oz Fax : +61 6 247 3425 | Internet : Mathew.BM.Lim@anu.edu.au
mbl900@anusf.anu.edu.au (Mathew BM LIM) (04/05/91)
In article <1991Apr3.133854@anusf.anu.edu.au>, mbl900@anusf.anu.edu.au (Mathew BM LIM) writes: |> |> Is SysVR4 process accounting done on a per UID or a per user name basis? |> |> That is, if I have 2 user names, mbl900 and mbl901 who share the same UID, 101, |> then will my process accounting records show usage divided into mbl900 and |> mbl901, or will it lump both together into the UID 101? |> |> Thanks |> PS : Does anyone have any idea of what I may break by having one UID and several login names attached to it? Will ps break? will disk quotas break? will my mail break? Will my sanity break? -- --- Mathew Lim, Unix Systems Programmer, ANU Supercomputer Facility, ANU, Australia. Telephone : +61 6 249 2750 | ACSnet : Mathew.BM.Lim@anu.oz Fax : +61 6 247 3425 | Internet : Mathew.BM.Lim@anu.edu.au
woods@eci386.uucp (Greg A. Woods) (04/11/91)
In article <1991Apr5.124324@anusf.anu.edu.au> mbl900@anusf.anu.edu.au (Mathew BM LIM) writes: > PS : Does anyone have any idea of what I may break by having one UID and > several login names attached to it? Will ps break? will disk quotas break? > will my mail break? Will my sanity break? Your UNIX security will break. I.e. you can kiss accountability good-bye! Mail may not work great, nor will anything which used getpwuid() or simply scans the password file for a user-id. It will always find only the first one that matches. -- Greg A. Woods woods@{eci386,gate,robohack,ontmoh,tmsoft}.UUCP ECI and UniForum Canada +1-416-443-1734 [h] +1-416-595-5425 [w] VE3TCP Toronto, Ontario CANADA Political speech and writing are largely the defense of the indefensible-ORWELL
rg@msel.unh.edu (Roger Gonzalez) (04/12/91)
In article <1991Apr11.161928.28750@eci386.uucp> woods@eci386.UUCP (Greg A. Woods) writes: >In article <1991Apr5.124324@anusf.anu.edu.au> mbl900@anusf.anu.edu.au (Mathew BM LIM) writes: >> PS : Does anyone have any idea of what I may break by having one UID and >> several login names attached to it? Will ps break? will disk quotas break? >> will my mail break? Will my sanity break? > >Your UNIX security will break. I.e. you can kiss accountability good-bye! > >Mail may not work great, nor will anything which used getpwuid() or >simply scans the password file for a user-id. It will always find >only the first one that matches. Actually it can be useful at sites where you have accounts on multiple machines, and they run one of the big ones like a dictatorship and force you into having a certain userid. Then, on your own workstation or whatever, you can make two "accounts", one with your preferred name, the other duplicating the account name on the other machine. Make the uid and gid the same on both, make the password on the second '*', and then you can do NFS from your account on the dictator, as well as rsh-ing and the like. Oh, it also helps to make the uid on your personal machine the same as what the dictators assign. joeblow:OIUW#Rkjh:123:456:Joe Blow:/home/joeblow:/bin/csh user902634:*:123:456:Joe Blow's alter ego::/home/joeblow:/bin/csh -Roger -- "The question of whether a computer can think is no more interesting than the question of whether a submarine can swim" - Edsgar W. Dijkstra rg@[msel|unhd].unh.edu | UNH Marine Systems Engineering Laboratory r_gonzalez@unhh.bitnet | Durham, NH 03824-3525