Which Ubuntu version am i running

cat /etc/lsb-release

shows something like 

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.10
DISTRIB_CODENAME=quantal
DISTRIB_DESCRIPTION="Ubuntu 12.10"

Delete graphics within Excel Sheet Office 2010

Tags

Excel

Find & Select

Go To

Special

Objects

Press OK

Press Delete to delete all of them

Apache more silent / Security-by-Obscurity

If you check Server response codes you will see maybe things like  :

Server: Apache/2.2.22 (Ubuntu)

To silence the Apache Server a bit more you can edit /etc/apache2/conf.d/security or maybe /etc/apache2/apache2.conf:

Change  ServerTokens OS

to

ServerTokens Prod 

which changes the response from above to

Server: Apache

——————

Change

ServerSignature On  to

ServerSignature Off

————————————–

If php is on the Server you will see something like that :

X-Powered-By: PHP/5.3.10-1ubuntu3.5

To get rid of this change wihtin php.ini  e.g. there : /etc/php5/apache2/php.ini

expose_php =  On to

expose_php =  Off

results in a disappeared php information