Hi Jesper, thanks for the quick reply. Answer to your questions: Q1 Why? I am doing some project where in we have a requirement for logging current user as well as the actual user (who logged into the system).
From security point of view such information mke sense.
Q2 If you could do that, then "su" would kind of loose its meaning... IMO "su" provides us the functionality to switch between different users i.e. different access levels. Moreover "su" does not mean that information about the previous user is lost; remember when we type "exit" it takes us to previous user. One interesting thing that i came across few minutes back. There are two command "whoami" and "who am i". Try following sequence of commands: i ) Login as "root" ii ) su - aaa iii ) whoami /* This will output aaa */ iv ) who am i /* This will output root */ So it seems there is some way. Regards, Dang On 5/5/06, Jesper Juhl <jesper.juhl@xxxxxxxxx> wrote:
On 5/5/06, Linux Dang <linuxdang@xxxxxxxxx> wrote: > Hi, > I am looking for some way to extract original user for a given > process. For example, > A user types following command > > i ) guest log's in as "aaa" > ii ) su - "bbb" > iii ) su - "ccc" > iv ) ./a.out > > I want to find the actual user i.e. "aaa". Why? > Can this be acheived on Linux 2.4.20? I don't think so, but I'm not 100% sure. If you could do that, then "su" would kind of loose its meaning... -- Jesper Juhl <jesper.juhl@xxxxxxxxx> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html
-- Regards, Linux Dang -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
