> > Greetings, > > While getting a feel for my Redhat 5.1 system, and > trying to upgrade I > have been using su a lot while logged in as a regular user. However I > have noticed some interesting limitations. > it seems while su'd as root, I cannot initialize an ftp session, > adduser, mkdir, cp or rm anything. Each time I try, I get a > command not > found message on the console. For ftp I get no route to host. > Howver if > I log in directly as root, I can do all of these, wihtout a hitch. > Is there a particular reason why? It seems that these > limitations make > su kind of pointless, and eliminates it's security benefits. "su" used without arguments does not initialize the environnement with root usual environment settings. I guess this is why you get command not found. I would say always use su like this: "/bin/su -" note the "-" as first argument telling it to initialize the environment by reading root .profile and other normal log in setup. note also the use of the complete path to /bin/su to prevent trojan horses or hashed commands to be launched instead of the /bin/su you wanted to use. > > I have an external Ditto backup by Iomega, that attaches to the > parallel port. However it has a pass through for a printer to be > attached as well. has anyone had expeirience with the resource sharing > protocol metioned in the ZIP drive mini-how-to ? if so, how > did it work, > and did/would/could you ever try to run a terminal through it ? no idea about that > > thanks again! > > Peter > pascal
