Bash Script to Centre The Active Window for Ubuntu/Linux Mint

I recently discovered that Linux Mint lets you use the Super/Win key plus left, right, up, down to control the current window size (window left, window right, maximize, unmaximize, respectively!), which is awesome. But I also like my windows centred with the old high resolution monitor. Hence…

This is a bash script to move and resize the active window to 65% of the screen width for anybody who might need it.

You’ll need xdotool and wmctrl installed.

Xaxis=$(xrandr --current | grep '*+' | uniq | awk '{print $1}' |  cut -d 'x' -f1)
Yaxis=$(xrandr --current | grep '*+' | uniq | awk '{print $1}' |  cut -d 'x' -f2)
WIDTH=$(echo "scale=0;$Xaxis*.65"|bc)
X=$(echo "scale=0;$Xaxis/2-$WIDTH/2"|bc)
WIN=`xdotool getactivewindow`
echo Resolution: $Xaxis x $Yaxis
echo New dimensions: $WIDTH x $HEIGHT
echo New position: $X x $Y
# unmaximize
wmctrl -r :ACTIVE: -b remove,maximized_vert,maximized_horz
xdotool windowmove $WIN $X $Y
xdotool windowsize $WIN $WIDTH $HEIGHT