On Wed, 2006-04-05 at 04:06 +0200, Meino Christian Cramer wrote: > From: "Daniel Pielmeier" <[EMAIL PROTECTED]> > Subject: Re: [gentoo-user] OT: Application for video cutting ? > Date: Mon, 3 Apr 2006 11:37:52 +0200 > > Hi Daniel, > > thanks for your reply and thank you all other replies to my question! > How can I manage to install qt-4 without cripple the rest of my > system (qt-3 based) ? > > Is there a way of parallel installation/usage ? And if so -- how can > I manage it "gentoo-like" ?
I had the same question a week ago, and Chris White pointed me toward one way: use 'chroot'. This approach costs disk space and some time to set up, but you're guaranteed to not mess anything up in your system and you have a complete new sandbox to play with (or as many as you want). Basically, get enough disk space on a filesystem somewhere large enough to hold your entire installation, and copy everything (from / except for your mount points like /proc and /dev) to that place. Use 'cp -rp ...' to preserve ownership/perms. Write a script that sets up the mount points for that new place like this: mount -t proc none /path/to/clone/proc mount --bind /dev /path/to/clone/dev mount --bind /sys /path/to/clone/sys ...and so on... Once you have that clone set up, you use chroot to change root into that clone: chroot /path/to/clone /bin/bash (/ for this shell is now that clone's root dir) env-update source /etc/profile export PS1="(chroot) $PS1" There you have it -- that shell is now pretending that / is /path/to/clone. emerge away and you're only affecting the clone. You can even su to your usual user account, and run X and everything. Just be sure to do the chroot when you're logged in as root at the outmost term (not within X). - Stephen -- Stephen Bartlett President, Bartlett Software, Inc. http://www.bartlettsoftware.biz/ > Thank you very much for your help in advance ! :) > > Keep hacking! > mcc > > > > Hi! > > > > If you just want to remove the adds from your recordings, i recommend > > ttcut at http://ttcut.tritime.org/ it is not in portage and depends on > > qt-4. Ttcut is able to cut frame accurately, so you can cut on I-, P- > > and B-Frames. > > I have written an ebuild, you will find it at > > http://bugs.gentoo.org/show_bug.cgi?id=122162. > > But you can also use the most recent version from svn under > > svn://svn.berlios.de/ttcut/trunk. > > Ttcut is in alpha state, so you may encounter problems too, but i > > think it is worth a try. > > > > HTH Daniel > > > > -- > > gentoo-user@gentoo.org mailing list > >
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