megacheck runs staticcheck, gosimple and unused at once. Because it is able to reuse work, it will be faster than running each tool separately.
go get honnef.co/go/tools/cmd/megacheck
The basic operation of megacheck is just like that of the other tools.
The flags of the individual tools are prefixed by the tools' names.
Tools can be disabled by setting
For explanations of the individual tools, see their respective readmes.