Make commands independent of location on system
It helps running autorandr_nitrogen_wallpaper on systems without
/bin/bash, /usr/bin/unlink, /bin/cp and /bin/mv. E.g. NixOS, which
doesn't have /bin/bash.
Simple script which allows you to save nitrogen's wallpaper setup
for current profile and restore it when profile is loaded.
Useful in case you are moving between different monitor setups and
orientations.