bashrc snippet for creating images for i3lock to use as a lockscreen background.

i3lock-bashrc

# for making lockscreen images
set-i3lock-bg() { 
        if [ ! -f ~/lock.png ]; then
            curl https://raw.githubusercontent.com/meskarune/i3lock-fancy/master/icons/lock.png > ~/lock.png
        fi
        SIZE=`xdpyinfo | grep dimensions | cut -d " "  -f 7`
        convert $1 -font Liberation-Sans \
       -geometry $SIZE -gravity center\
       -pointsize 26 -fill white -extent $SIZE -gravity center \
       -annotate +0+160 "Type Password to Unlock" ~/lock.png \
       -gravity center -composite ~/i3-background.png
}