Find the wireless password on Ubuntu

How many times happen to have a guest that asks you about the wireless password and you cannot remember it? On Ubuntu Linux, you can easily retrieve the wireless password like this: [code language=”bash”] sudo cat /etc/NetworkManager/system-connections/YOUR_NETWORK_NAME_HERE | grep "psk=" [/code] The output will be something like: [code language=”bash”] psk=myultrasecretpassword [/code]

Ubuntu 12/13 install and configure Java JRE

1. Download JRE 7 from Oracle website. 2. Unarchive the file: [code language=”bash”] tar zxpvf jre-7u25-linux-x64.tar.gz [/code] 3. Create the installation directory [code language=”bash”] sudo mkdir -p /usr/lib/jvm/ [/code] 4. Move the unarchived directory in the newly created one [code language=”bash”] sudo mv ./jre1.7.0* /usr/lib/jvm/jre1.7.0 [/code] 5. execute this wonderful command: [code language=”bash”] sudo update-alternatives… Continue reading Ubuntu 12/13 install and configure Java JRE

What’s new in Linux Kernel 3.7

The version 3.7 of Linux Kernel was just released few days ago (11 December).  In this version there are a lot of interesting features, and I will mention only unified system architecture support for ARM, TCP Fast Open and Virtual extensible LAN tunneling protocol. For an extended list of the new features, you can check a list here.

Cannot redeclare geoip_country_code_by_name

Today I had this error on my Ubuntu Linux box Fatal error: Cannot redeclare geoip_country_code_by_name() The reason was that I have geoip extension enabled in my PHP configuration and also I used the file from The solution is very simple. Actually, there are two solutions: First is to disable the geoip extension from… Continue reading Cannot redeclare geoip_country_code_by_name