If I install a node package globally with npm i -g aoeu, I can update this package by running npm update -g aoeu, and I can update all my globally installed packages by running npm update -g.
Now, if I install a Go package to my $GOPATH/bin with go install GitHub.com/aoeu@latest, how can I update all these globally installed packages?
Now, if I install a Go package to my $GOPATH/bin with go install GitHub.com/aoeu@latest, how can I update all these globally installed packages?
You can't, except to update each one individually. There's no mechanism for this in Go. The files in this directory are not tracked in any way.