linux learn note

install package
download package either by browser or wget a .deb file
sudo dpkg -i XXXXX.deb
if meet issues, try below
sudo apt-get -f install
sudo dpkg -i XXXXX.deb

to update current install package
sudo apt-get update

install svn
1. install apache2
sudo apt-get install apache2
configure apache2
....

2. install svn
sudo apt-get install subversion
configure svn and start svn daemon


To list packages install in system
pkg-config --list-all
To uninstall a make install
sudo make uninstall

if not work 
try 
checkinstall
or use 
make -n install
to trace install steps and uninstall manually

EFI switch Graphic Mode

UEFI switch between graphic/Text mode example. 

  EFI_CONSOLE_CONTROL_PROTOCOL  *ConsoleControl = NULL;

  Status = gBS->LocateProtocol (&gEfiConsoleControlProtocolGuid, NULL, (VOID**)&ConsoleControl);

  if (ConsoleControl != NULL)

  {

    ConsoleControl->SetMode(ConsoleControl, EfiConsoleControlScreenGraphics);

  }

Only below two modes can choose from.

  EfiConsoleControlScreenText,

  EfiConsoleControlScreenGraphics

Learn one thing. Even switch to graphic mode, you can still use EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL or even Print.