On Fri, 2 Jun 2017 07:22:20 -0700 (PDT), Len Ovens wrote: >On Fri, 2 Jun 2017, Ralf Mardorf wrote: > >> I attached a script to download 64 bit architecture Ubuntu desktop >> flavours, with an automatic check against signed checksums. >> >> After making the script executable running >> >> ./luamd64_1610.sh ubuntustudio 16.10 >> ./luamd64_1610.sh ubuntustudio 17.04 > >zsync also auto checks against the checksums, with the added benefit >it will only download the chunks you don't already have. It does >require the url of the zsync file though, so less easy to use.
Hi Len, thank you. Too funny, there's a page that doesn't exist: https://wiki.ubuntu.com/ZsyncCdImage But there's e.g. this page http://www.ubuntubuzz.com/2017/03/downloading-gnulinux-with-zsync.html or https://help.ubuntu.com/community/ZsyncCdImage . I didn't read them, just searched for (signed) "checksum" without success. I didn't read the results of https://www.google.de/?gws_rd=ssl#q=zsync+checksum . Does it only check against the checksum or does it also check the checksum against the signature? Note, my script downloads the Ubuntu public keys and checks if the checksums are valid, before it checks the ISO against the appropriate checksum. The script is from 2016-10-27, so downloading the keys _might_ (but I don't think so) require an update. [rocketmouse@archlinux ~]$ cat luamd64_1610.sh #snip# key gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys FBB75451 EFE21092 key gpg --list-keys --with-fingerprint FBB75451 EFE21092 key gpg --verify SHA256SUMS.gpg SHA256SUMS #snip]# sha256sum -c SHA256SUMS 2>&1 | grep OK status=$? if [ $status -ne 0 ]; then echo "$flavour-$iso-amd64.iso: Validation failed" fi echo exit $status Regards, Ralf -- ubuntu-studio-devel mailing list ubuntu-studio-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel