Flash Player is a cross-platform browser plug-in that delivers breakthrough Web experiences to over 98% of Internet users.
Method 1
If you run Etch you will want to use backport.org
First you need to edit the /etc/apt/sources.list file using the following command
#nano /etc/apt/sources.list
add the following line
deb
http://www.backports.org/debian etch-backports main contrib non-free
save and exit the file.
Update the source list using the following command
#apt-get update
All backports are deactivated by default. If you want to install something from backports run:
#apt-get -t etch-backports install “packagename”
If you are using etch and you want apt to verify the downloaded backports you can import backports.org archive’s key into apt:
#apt-get install debian-backports-keyring
If you want to get your packages from backports upgraded automatically the following entry in /etc/apt/preferences should be sufficient:
Package: *
Pin: release a=etch-backports
Pin-Priority: 200
Once you have backports all set up do one of the following commands
#apt-get update
#apt-get install flashplugin-nonfree
Method 2
Using debian-multimedia.org repo
First you need to download the debian-multimedia-keyring package from here
Install using the following command
#dpkg -i debian-multimedia-keyring_2008.10.16_all.deb
you need to edit the /etc/apt/sources.list file using the following command
#nano /etc/apt/sources.list
add the following lines which is suitable for you
For etch (stable) alpha, amd64, hppa, i386, ia64, powerpc and sparc packages
deb
http://www.debian-multimedia.org etch main
or
deb
ftp://ftp.debian-multimedia.org etch main
or
deb
http://www.debian-multimedia.org stable main or
deb
ftp://ftp.debian-multimedia.org stable main
For lenny (testing) alpha, amd64, armel, hppa, i386, ia64, mipsel, powerpc and sparc packages
deb
http://www.debian-multimedia.org lenny main
or
deb
ftp://ftp.debian-multimedia.org lenny main
or
deb
http://www.debian-multimedia.org testing main or
deb
ftp://ftp.debian-multimedia.org testing main
For sid (unstable) alpha, amd64, armel, hppa, i386, ia64, mipsel, powerpc and sparc packages.
deb
http://www.debian-multimedia.org sid main or
deb
ftp://ftp.debian-multimedia.org sid main
For experimental amd64, i386 and powerpc packages. transcode, k9copy and kplayer (Qt4 version) and mjpegtools packages.
The official Debian experimental repository isn’t needed.
deb
http://www.debian-multimedia.org experimental main or
deb
ftp://ftp.debian-multimedia.org experimental main
For source
deb-src
http://www.debian-multimedia.org sid main or
deb-src
ftp://ftp.debian-multimedia.org sid main
Install flash player using the following command
#apt-get install flashplayer-mozilla
Once you have flash installed you can check in Iceweasel by entering about
lugins in the address bar. It should show something like:
Shockwave Flash
File name: /usr/lib/flashplayer-mozilla/libflashplayer.so
Shockwave Flash 10.0.12.36
The above works for Iceweasel, Opera, Epiphany, and Midori