Install JDK
Linux 32-bit installation instructions
Linux 64-bit installation instructions
Create directory for Red5
mkdir -p /usr/share/red5
Set environment variable for Red5
export RED5_HOME=/usr/share/red5
Get the latest tarball for Red5
Browse to Red5 Server Releases
Scroll to "Latest Release"
Download the tar.gz
Copy to RED5_HOME
Expand the tarball
Start the server
cd /usr/share/red5
./red5.sh &
Stop the server
cd /usr/share/red5
./red5-shutdown.sh
Configure init script
Sample script for init, may be found here