Here is a script to generate different sizes and formats of favicon as well as apple touch icons for different tablets and phones. It uses the convert program which is part of ImageMagick.
As a starting point, create a square PNG with dimensions > 144px. I went with 512px. The script generates the different favicons for IOS, Android and desktop browsers as well as outputting the HTML to put in your header.
#!/bin/sh
convert favicon.png -bordercolor white -border 0 \
\( -clone 0 -resize 16x16 \) \
\( -clone 0 -resize 24x24 \) \
\( -clone 0 -resize 32x32 \) \
\( -clone 0 -resize 48x48 \) \
\( -clone 0 -resize 64x64 \) \
-delete 0 -alpha off -colors 256 favicon.ico
HTML=""
for SIZE in 57 72 114 144
do
for SUFFIX in "" "-precomposed"
do
FILENAME=apple-touch-icon-${SIZE}x${SIZE}${SUFFIX}.png
convert -resize x$SIZE favicon.png $FILENAME
if [ "$SIZE" -ne "57" ]
then
HTML=$HTML"<link href=\"${FILENAME}\" rel=\"apple-touch-icon${SUFFIX}\" sizes=\"${SIZE}x${SIZE}\" />\n"
fi
done
done
# Don't need the dimensions explicit for the 57x57 icon
mv apple-touch-icon-57x57.png apple-touch-icon.png
mv apple-touch-icon-57x57-precomposed.png apple-touch-icon-precomposed.png
HTML='
<link href="apple-touch-icon.png" rel="apple-touch-icon" />
\n
<link href="apple-touch-icon-precomposed.png" rel="apple-touch-icon-precomposed" />
\n'$HTML
echo $HTML
References:
How to Add a Favicon to your Site
Adding an Icon for iPhone, iPad & Android to Your Website
Don’t Forget About Favicons on Retina Screens
Apple: Custom Icon and Image Creation Guidelines
Microsoft: Customizing the Site Icon
ImageMagick Favicon Recipe
Generate Favicons and Apple Touch Icons - Comments
Until recently, I was running a Node.js web application using Websockets with socket.io alongside an Apache web server. I wanted Apache to run on port 80 and serve both sites using name-based virtual hosting. However, Apache httpd mod_proxy couldn’t proxy Websockets correctly.
I discovered that there is a new mod_proxy_wstunnel module in the Apache httpd source trunk in an article describing how to backport mod_proxy_wstunnel to Apache 2.4 or 2.2. I figured out the specific steps for doing this on Ubuntu (tested on 11.10 with Apache httpd 2.2.20). I wanted to add them as a comment, but they were disabled on that blog.
Here are the steps, see the original blog post of the patch author for more information:
# Check apache version (should be 2.2.20 as of writing, if not adjust the next step)
dpkg -s apache2
# Checkout apache source
svn checkout http://svn.apache.org/repos/asf/httpd/httpd/tags/2.2.20/ httpd-2.2.20
# Get patch and apply it
wget http://cafarelli.fr/gentoo/apache-2.2.24-wstunnel.patch
cd httpd-2.2.20
patch -p1 < ../apache-2.2.24-wstunnel.patch
# Build Apache
svn co http://svn.apache.org/repos/asf/apr/apr/branches/1.4.x srclib/apr
svn co http://svn.apache.org/repos/asf/apr/apr-util/branches/1.3.x srclib/apr-util
./buildconf # EDIT: Some commenters noted that buildconf should be run before the configure
./configure --enable-proxy=shared --enable-proxy_wstunnel=shared
make
# Copy the module and recompiled mod_proxy (for new symbols) to the ubuntu apache installation and update the permissions to match the other modules
sudo cp modules/proxy/.libs/mod_proxy{_wstunnel,}.so /usr/lib/apache2/modules/
sudo chmod 644 /usr/lib/apache2/modules/mod_proxy{_wstunnel,}.so
echo -e "# Depends: proxy\nLoadModule proxy_wstunnel_module /usr/lib/apache2/modules/mod_proxy_wstunnel.so" | sudo tee -a /etc/apache2/mods-available/proxy_wstunnel.load
# Enable the module (also make any configuration changes you need)
sudo a2enmod proxy_wstunnel
sudo service apache2 restart
Apache 2.2 Websocket Proxying on Ubuntu with mod_proxy_wstunnel - Comments
Format text copied from a PDF to try and remove unwanted line breaks.
See the page to format text copied from a PDF.
Fix PDF line breaks for copy and paste - Comments
Add to /etc/rc.local before the ‘exit 0’ line:
mkdir /var/run/screen
chmod 775 /var/run/screen
chgrp utmp /var/run/screen
su USER -c 'screen -m -d -S SCREENNAME bash -c "COMMAND"'
Replace USER with the user you want the command to run as. SCREENNAME with any name you like, and COMMAND with the actual command to run in the screen.
The first three lines were necessary to work around a bug in screen on Ubuntu.
Ubuntu: Running a command in GNU screen on boot as another user - Comments
