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#!/bin/bash
export DISPLAY=":0"
OUTPUT="HDMI-A-0"
ORIGINAL_RES=$(xdpyinfo | grep dimensions | sed -r 's/^[^0-9]*([0-9]+x[0-9]+).*$/\1/')
NEW_RES="${1:-$ORIGINAL_RES}"
WM=$(wmctrl -m | head -n 1 | cut -d " " -f2)
echo "$ORIGINAL_RES"
set_resolution() {
if [ "$ORIGINAL_RES" != "$NEW_RES" ]; then
xrandr --output "$OUTPUT" --mode "$1"
if [ "$WM" = "i3" ]; then
i3-msg restart
fi
fi
}
set_resolution "$NEW_RES"