sudo apt-get install xbacklightxbacklight -set 70%dpkg --compare-versions versionA lt/le/eq/ne/ge/gt versionB; echo $?dpkg --compare-versions 0.6.0 lt 0.6.0~rc2-3; echo $?1sudo apt-get build-dep konsole
apt-get source konsole
cd konsole-*/src/
vim SessionController.cppcd ..
dpkg-buildpackage -rfakeroot -b
sudo dpkg -i ../konsole_*.debmkisofs -J -r -o your.iso /your/files/sudo add-apt-repository ppa:<ppa_name>