Open Windows Explorer from WSL Linux shell

Launch Windows Explorer from a WSL shell:

$ explorer.exe .

Caveat

The above trick will not work, if Windows interop is turned off in WSL via /etc/wsl.conf:

# Do not support launching Windows processes
# Do not add Windows PATH to the $PATH variable

[interop]
enabled = false
appendWindowsPath = false

— Oliver Frolovs, 2020