Autoplank

Automatically move plank to the monitor your mouse cursor is currently on.

Build the program or download the latest version from releases. If you download a pre-built binary, don't forget to make it executable!

cargo build --release

Copy the binary to ~/.local/bin/autoplank:

cp target/release/autoplank ~/.local/bin/autoplank

Create a autostart file: ~/.config/autostart/autoplank.desktop

[Desktop Entry]
Type=Application
Name=Autoplank
Description=Automatically move plank across monitors
Exec=.local/bin/autoplank

optionally set your own polling rate like this (default: 500):

...
Exec=.local/bin/autoplank -p 200

When adding/removing a monitor make sure to rescan:

autoplank -r

Elementary OS

Elementary has a service called cerbere which handles wingpanel and plank. To make autoplank work properly, you might have to run autoplank --elementary-fix. You can revert this change with autoplank --elementary-restore. For these commands to take affect, you have to restart/log out and in.

Inspired by abiosoft/autoplank.