tldr/pages/common/go-fmt.md

go fmt

Format Go source files. Prints the filenames that are changed. More information: https://pkg.go.dev/cmd/go#hdr-Gofmt__reformat__package_sources.

• Format Go source files in the current directory:

go fmt

• Format a specific Go package in your import path ($GOPATH/src):

go fmt {{path/to/package}}

• Format the package in the current directory and all subdirectories (note the ...):

go fmt {{./...}}

• Print what format commands would've been run, without modifying anything:

go fmt -n

• Print which format commands are run as they are run:

go fmt -x