Chroot
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- https://help.ubuntu.com/community/BasicChroot
- https://help.ubuntu.com/community/DebootstrapChroot
- http://www.thegeekstuff.com/2010/01/debootstrap-minimal-debian-ubuntu-installation/
- http://www.binarytides.com/setup-chroot-ubuntu-debootstrap/ (Works after a little change)
- How to Use the chroot Command on Linux
- Archbox Makes It Easy To Install Software From Arch Linux On Other Linux Distributions (Using A Chroot Environment)
Note that we have to change the conf file a little bit. The 'location' word needs to be changed to 'directory'. Also at the last step when we are ready to test a 32-bit GUI app, we need to issue DISPLAY in a separate line; such as
export DISPLAY=:0.0
su brb # brb is my root user in the host system that can invoke the schroot program
# firefox does not allow to use root to start it
firefox
For a recap:
1. Install the packages sudo apt-get install debootstrap schroot -y 2. Create a schroot configuration file sudo nano /etc/schroot/chroot.d/precise_i386.conf 3. Install 32-bit ubuntu with debootstrap sudo mkdir -p /srv/chroot/precise_i386 sudo debootstrap --variant=buildd --arch=i386 precise /srv/chroot/precise_i386 http://archive.ubuntu.com/ubuntu/ 4. Test the chroot environment schroot -l schroot -c precise_i386 -u root uname -a cat /etc/issue 5. Additional configuration apt-get install ubuntu-minimal # That's all.
The article also mentioned the home directories (Documents, Downloads, ...) of the users within the chroot are shared with the host. How to access them from the host?