$ gofmt 2.1.go 
	"strconv"
// the srtconv package for converting them into integers"
	sum := 0
	for i := 1; i < len(arguments); i++ {
		temp, _ := strconv.Atoi(arguments[i])
		sum = sum + temp
	fmt.Println("Sum:", sum)
$ go run 2.1.go 1 2 3 
Sum: 6

$ file helloworld
helloworld: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
statically linked, with debug_info, not stripped
$ ldd helloworld
	not a dynamic executable
$ strip helloworld
$ ldd helloworld
	not a dynamic executable
$ ls -l helloworld
-rwxr-x--- 1 ebal ebal 1226248 Oct 14 23:14 helloworld
## From 1855827  ~~> 1226248
$ file helloworld
helloworld: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
statically linked, stripped
## Variables
GOROOT
GOHOME
GOBIN
GOPATH
$ go help environment  | head -5
The go command, and the tools it invokes, examine a few different
environment variables. For many of these, you can see the default
value of on your system by running 'go env NAME', where NAME
is the
name of the variable.
$ gofmt test.go 
import (
	"fmt"
	"os"
)
	arguments := os.Args
	for i := 0; i < len(arguments); i++ {
		fmt.Println(arguments[i])
	}
$ go run test.go 1 2 
TMPDIR/go-build729121647/command-line-arguments/_obj/exe/test
1
2

%% 
## Go uses static linking by default
$ go build helloworld.go 
$ ls -l
total 752
-rwxr-x--- 1 ebal ebal 1855827 Oct 14 23:07 helloworld
-rw-r----- 1 ebal ebal     109 Oct 14 23:05 helloworld.go
$ ./helloworld 

$ godoc fmt | head
use 'godoc cmd/fmt' for documentation on the fmt command 
PACKAGE DOCUMENTATION
package fmt
    import "fmt"
## The Go Programming Language - documentation in web server ! 
$ godoc -http=:8181

**go** in **archlinux**
%%(html5)
$ sudo pacman -S go go-tools
fmt.Println("Hello World!")
$ cat helloworld.go 
fmt.Println("Hello World!")
$ gofmt helloworld.go 
	fmt.Println("Hello World!")