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go fmt — Format Go source files, printing the changed filenames. More information: <https://pkg.go.dev/cmd/go

Submitted by: @import:tldr-pages·Mar 2, 2026·

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thecommandformatfilessourcecligo fmtprinting

Problem

How to use the go fmt command: Format Go source files, printing the changed filenames. More information: <https://pkg.go.dev/cmd/go#hdr-Gofmt__reformat__package_sources>.

Solution

go fmt — Format Go source files, printing the changed filenames. 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

Code Snippets

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

Context

tldr-pages: common/go fmt

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