2010-10-07 16:07 GMT John McCabe-Dansted <gma...@gmail.com>: > On Thu, Oct 7, 2010 at 10:05 AM, Louis Simard <louis.sim...@gmail.com> wrote: >> Do you want me to add to my script any of the optimisations discussed >> in your email? They are: Using AdvanceCOMP to recompress .png images >> and gzipped files; using either of jpegoptim or jpegrescan to >> losslessly recompress .jpg images; "transcoding" man pages from .gz to >> .lzma. I'm not going to add untested optimisations yet, such as >> transcoding *all* .gz files to .lzma. > > Sure. This could help with testing that these actually work ;).
It works! :) 'man' reads its files correctly, after an addition to the script to fix the broken symlinks (for example, zfgrep.1.gz pointing to zgrep.1.gz in /usr/share/man/man1 which became zgrep.1.lzma), OpenOffice.org opens the Human icons correctly, all of the PNG images compare equal using pngtopnm (although some emit a warning about the pixel aspect ratio, i.e. non-square pixels) and Java is able to read .jar files that have been recompressed. However, while recompressing the files helped the ISO size, it made the install size grow by about 180 MB... When | ISO size (B) | Install (KiB) ------------------------------------ Old | 718,864,384 | 2,293,740 New | 711,032,832 | 2,474,660 Ow! What's going on? Here's the methodology I used for that result. * The base CD is Ubuntu 10.04.1. * Using the virtual hardware provided by VirtualBox OSE 3.1.6 r59338, 384 MB RAM, 5 GB SCSI hard drive and IDE CD-ROM drive using the ISO. * Look at the size of the CD ISO using ls -l. * Using 'df', look at the number of disk blocks used on the VM's hard drive before rebooting from an installation via the GUI: a) Language: English b) Time zone: Europe/United Kingdom Time c) Keyboard layout: USA d) Disk space preparation: Manual partitioning, no swap, fill the entire drive with an ext4 partition for / e) Username, password and computer name: "dummy" Attached are the scripts I used to mount the original CD, recompress the files and make the new CD. No CDs were harmed in the making of this email. - Louis
ubuntu-opt.tar.gz
Description: GNU Zip compressed data
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