debian NO_PUBKEY AAFF4A5B336064B5

error message:

W: GPG error: http://deb.opera.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AAFF4A5B336064B5


reason:
key is outdated


solution:
wget -O - http://deb.opera.com/archive.key | sudo apt-key add -

hp laserjet p1102w setup on debian 6

hp laserjet p1102w setup on debian 6


commands:

wget http://prdownloads.sourceforge.net/hplip/hplip-3.11.12.run
 sh hplip-3.11.12.run


then run hp-setup to download some additional software then you are good to go

firefx how to select column in table

hold down ctrl key while select

firefox how to disable/block alert,confirm,prompt?

find your prefs.js add 3 lines user_pref("capability.policy.default.Window.alert", "noAccess"); user_pref("capability.policy.default.Window.confirm", "noAccess"); user_pref("capability.policy.default.Window.prompt", "noAccess");

scim stopped working

scim stopped working? try kill -9 all process of scim, then run this /usr/lib/scim-1.0/scim-launcher -d -c simple -e all -f socket --no-stay

To configure Exim4, run the following command

sudo dpkg-reconfigure exim4-config

To install Exim4, run the following command

sudo apt-get install exim4