Networking

Hardware

Software

Consultation

 
List Postfix Default Values  
 

To get a detailed list of defaults for Postfix, simply:

postconf -d

However, this may be a bit unweildy, so narrowing it down with a pipe to grep will help, as in:

postconf -d | grep myhostname
 
 
 
List Postfix NON-Default Values  
 

To get a list parameters that have been changed, this will include parameters that are default but configured within main.cf, simply:

postconf -n

Again, you can narrow down the list by piping to grep, as in:

postconf -n | grep myhostname
 
 
 
List Upgradeable Packages  
 

Have you ever just wanted a list of packages that can be upgraded, in a system with a GUI it's super easy, but in a headless or text based system it seams you have to start the upgrade to get the list.  The following command will simply list the upgradeable packages:

aptitude search '~U'
 
 
 
Mount a Physical Disk in VirtualBox  
 

Sometimes it is necessary to access a physical disk within a VirtualBox virtual machine.  This is actually quite simple just a few steps are required.

 
 
StartPrev12345678910NextEnd

Page 7 of 12