Table of Contents

Arch Linux

Pacman

see also: Pacman Rosetta

uninstall packages with regex matching sudo pacman -R $(pacman -Qsq haskell)
find package which contains given file pkgfile file
find all modified config files pacman -Qii | grep "^MODIFIED" | cut -f2
list all manually installed packages pacman -Qet
install optional dependencies for a package pacman -S --asdeps --needed

Hardware Video Acceleration

check with vdpauinfo, install mesa-vdpau for Radeon GPUs.

(source: Arch Wiki)

/etc/pacman.conf

/etc/pacman.conf
IgnorePkg # ignore updates
HoldPkg # pacman will ask for confirmation before --remove

same style for GTK+ and Qt applications

/etc/xdg/Trolltech.conf
[Qt]
style=GTK+

(Source)

Performance

CPU-Governor

/etc/default/cpupower
governor='performance'

Tools