[Debian] Install Adobe flash player

1. You can install with apt-get command:

[user@debian]:~$ su -
Password:
[root@debian]:~# apt-get install flashplugin-nonfree

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2. Or download package from homepage:
http://get.adobe.com/flashplayer/otherversions/

After:

[user@debian]:~$ mkdir ~/flash_player
[user@debian]:~$ mv install_flash_player* ~/flash_player
[user@debian]:~$ cd ~/flash_player
[user@debian]:~/flash_player$ tar xvf install_flash_player*

Read, readme.txt file, and do instructions.
[user@debian]:~/flash_player$ cat readme.txt

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More information:
https://wiki.debian.org/FlashPlayer/
http://www.adobe.com/devnet/flashplayer/articles/flash_player_admin_guide.html
http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html