goコマンドのオプションとしてcleanというものがある。
go 1.15.6のヘルプは以下の通り。
$ go help clean
usage: go clean [clean flags] [build flags] [packages]
Clean removes object files from package source directories.
The go command builds most objects in a temporary directory,
so go clean is mainly concerned with object files left by other
tools or by manual invocations of go build.
If a package argument is given or the -i or -r flag is set,
clean removes the following files from each of the
source directories corresponding to the import paths:
_obj/ old object directory, left from Makefiles
_test/ old test directory, left from Makefiles
_testmain.go old gotest file, left from Makefiles
test.out old test log, left from Makefiles
build.out old test log, left from Makefiles
*.[568ao] object files, left from Makefiles
DIR(.exe) from go build
DIR.test(.exe) from go test -c
MAINFILE(.exe) from go build MAINFILE.go
*.so from SWIG
In the list, DIR represents the final path element of the
directory, and MAINFILE is the base name of any Go source
file in the directory that is not included when building
the package.
The -i flag causes clean to remove the corresponding installed
archive or binary (what 'go install' would create).
The -n flag causes clean to print the remove commands it would execute,
but not run them.
The -r flag causes clean to be applied recursively to all the
dependencies of the packages named by the import paths.
The -x flag causes clean to print remove commands as it executes them.
The -cache flag causes clean to remove the entire go build cache.
The -testcache flag causes clean to expire all test results in the
go build cache.
The -modcache flag causes clean to remove the entire module
download cache, including unpacked source code of versioned
dependencies.
For more about build flags, see 'go help build'.
For more about specifying packages, see 'go help packages'.
iでgo install で作られたものを削除する。
nオプションは削除前に何が実行されて削除されるのかを確認できる。
go clean -i -n github.com/sample_user/sample
go clean -i github.com/sample_user/sample
これだけだとsrc配下に残っているものは消えてくれないので手動で対象ディレクトリをまるごと削除する
rm -rf $GOPATH/src/github.com/sample_user/sample