Using sudo ./IntelliJIDEALicenseServer_darwin_amd64 on macOS 10.12+ will be some problems like Permission denied and Command not found.

To solve this, you may need brew install upx and upx -d ./IntelliJIDEALicenseServer_darwin_amd64 first.

And since sudo spctl --master-disable doen’t work well in this case, consider use chmod a+x ./IntelliJIDEALicenseServer_darwin_amd64 instead.