On Wed, Jan 21, 2009 at 11:44 AM, Sudarsan Sridhar <[email protected]>wrote:
> Hello all, > > Long time back, when I was new to linux, I wanted to see which distro is > good. So I tried installed Ubuntu and Fedora on the same machine. To make my > job easy, i made a common home partition and used the same in both. > > I installed Fedora first and created my user and its home in this home > partition. > Then i installed Ubuntu and created a new user with the same name as the > one in Fedora and pointed the home directory to the existing one. > Now when i logged in i got an error that my home directory was inaccesible. The standard solution which i follow in this case -- "reusing /home for new installation" is login to root -- you will be able to do easily *$ chown -R narendra:narendra /home/narendra* where narendra is the user name now logout and login as normal user ,, > So i went to failsafe terminal login and did 'ls -l' from '/home'. What i > found was that by default Fedora assigns UID & GID as 1000 for the first > user and Ubuntu assigns 500 for the same. So all i had to do was a small > edit to the /etc/passwd and /etc/groups files and change these IDs to 1000 > in Ubuntu and restart. > > Viola!!! I could share same settings and same desktop on both OSes. > ______Sudarsan > > PS: I don't recommend installing two flavours of linux and sharing same > home dir. I caused me a great deal of pain due some system level driver > settings being different. > > > On Wed, Jan 21, 2009 at 10:50, Vivek Khurana <[email protected]>wrote: > >> >> Hi! >> >> The rule of thumb in computer security world is that the physical >> access plays an important role in ensuring security of the system. If >> I can get access to hard drive I can do a lot more. The writeup you >> posted has nothing to do with Linux security, it is a filesystem level >> feature. You need not even switch users but you can mount the host >> drive and get access to data as long as you have sufficient access. >> The Linux kernel's job is to ensure no one with insufficient >> privileges can access the data and the kernel is doing its job without >> any flaw. When you login as root, you have all privileges and freedom >> to access any device attached to your system, hence you can access >> host drive too. So will you please point out how is linux insecure ? >> >> Before posting FUD it is better to do some basic research. >> >> regards >> Vivek >> >> On Jan 21, 12:09 am, Robin Paul <[email protected]> wrote: >> > Most people in this group wud simply hate reading this, but this is >> true. No >> > matter how u set ur permissions in ur desktop linux they can be broken >> > easily with the help of a live CD. >> > >> > I used Hardy live CD, logged in to my own comp. using it >> which >> > has got Hardy 8.04 in hdisk. the CD boots into Live session user which >> does >> > not give u access to the root folder of the hdisk Linux and other users. >> U >> > can bypass it easily, go to the Administration->user and groups, click >> root >> > and then on properties tab and type a desired password. Go to >> > administratore->Login Window , click on security tab and enable login of >> > administrator thru GDM. Then go to Quit-> Switch user. Type "root" as >> > username and then d pswd u had set earlier, u log in as root in a >> foreign >> > computer. Then u can access any part of the host computer at will. Thus >> I >> > use Linux to break Linux's security. Linus Torvalds has some serious >> > thinking to do!!!!!!![?]. >> > Ofcourse there r obvious ways to stop a live CD. 1st set a password in >> the >> > BIOS , second is to encrypt ur hdisk. But, while the first is not a >> merit of >> > Linux the second has its own problems. If the hdisk Linux crashes due to >> > some reason it becomes very difficult to retrieve the data in the hdrive >> > using a live CD >> > >> > Dont think I am anti-Linux. This is just an experiment which I carried >> out. >> > Ubuntu is the best operating system I have ever used. And I will always >> be >> > interested in it. But this is a problem which needs to be addressed >> > therefore I have raised it. >> > >> > Do try this experiment with ur own distro and let me kno. >> > >> > Robin >> > >> > -- >> > Robin Paul >> > >> > Permanent Address: >> > 1469, Poorvanchal Complex >> > J.N.U Campus >> > New Delhi - 110067 >> > Phone:011-26741386 >> > e-mail:[email protected] <e-mail%[email protected]> < >> e-mail%[email protected] <e-mail%[email protected]>> >> > Mobile No. - 9968047983 >> > >> > 360.gif >> > < 1KViewDownload >> >> > > > > -- ┌─────────────────────────┐ │ Narendra Sisodiya │ R&D Engineer │ http://narendra.techfandu.org └─────────────────────────┘ --~--~---------~--~----~------------~-------~--~----~ l...@iitd mailing list -- group http://groups.google.com/group/iitdlug -~----------~----~----~----~------~----~------~--~---
