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15

Turns out I was being dense. A correct Googling and I found my answer on the Ubuntu Wiki. All I need to run is: zsync http://cdimage.ubuntu.com/daily-live/current/oneiric-desktop-amd64.iso.zsync I should point out that my previously-downloaded ISO is in the same path as this. It downloaded the zsync file, checked it against my ISO and updated it to the ...


5

zsync has terrible output for parsing. You'd be crazy to attempt that. That said, I'm apparently crazy. #!/bin/bash url=$1 seedfile=$2 tempdir=$(mktemp -d) msgfile=$tempdir/message trap 'rm -rf "$tempdir"' EXIT down_filter() { local message line percent speed echo "Downloading zsync file" > "$msgfile" read -r -n1 _ while read -r line; ...


3

Testing daily builds with bandwidth caps, I started trying to figure out how to go about this. Oli's posted technique led a response of "No relevent local data found - I will be downloading the whole file." This is what I had to do to tell zsync to look for the right iso to build off of. zsync -i /path/to/old/trusty-desktop-amd64.iso ...


2

For ISOs that can be regularly updated then downloading from a zsync is a good idea. The daily builds area (link below) contains a snapshot from the automatic build area - no obvious quality control other than it just builds. For ISOs that are fixed at a certain point in time such as the beta then you should use the torrent file (preferably) or download ...


2

The betas are "released", you'll find them where you'd find any other release of Ubuntu: http://releases.ubuntu.com/12.04/


2

It seems that most mirrors only mirror releases or the package archives, but not the daily ISOs. I've put together a Google search that brings up some mirrors that you could try. I haven't seen any that are in Asia though. Below are the first few results I get. http://ftp.heanet.ie/mirrors/download.sourceforge.net/ubuntu-cdimage/daily-live/current/ ...


1

You would have to get the Beta-ISO for your architecture (amd64,i386,...) and the zsync file for the release of the same architecture. So you can update i.e. a amd64 Trusty Beta to an amd64 Trusty FinalRelease. If you download the ISO for the wrong arch, you'll have to update large parts of the ISO, because nearly every binary file will change...


1

That's not a good idea. It's better to wait until tomorrow April 17 and download the Ubuntu 14.04 final release (update: Ubuntu 14.04 final release is now available for download). By the time you figure out how to update your Ubuntu 12.04 iso and make it work as an Ubuntu 14.04 iso, it will probably be April 17 anyway, and you will be able to download the ...



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