CODEWITHSUNDEEP
go
user1391070
user1391070

Reputation: 53

How can I find out the installation directory of the running program in Go?

How can I write a demo.go program that prints the installation path of demo.exe?

D:\>go build demo.go

demo.exe is in D:\. After moving demo.exe to C:\Windows,then under the D:\ path(it is Not in the C:\Windows) running demo.exe should print C:\Windows.

below picture showing than is not working for this case(because demo.exe always get its current execute path,NOT its really path) . That just tells you the current execute directory, not the directory containing the file https://github.com/axgle/go/blob/master/may_app_path_bug.jpg

Update: window/linux solution is here https://github.com/axgle/app

Upvotes: 1

Views: 242

Answers (2)

Mostafa
Mostafa

Reputation: 28126

package main

import (
    "fmt"
    "path/filepath"
    "os"
)

func main() {
    path, err := filepath.Abs(os.Args[0])
    if err != nil { panic(err) }
    fmt.Println(path)
}

Learn more by reading about os.Args and filepath.Abs.

Upvotes: 3

zzzz
zzzz

Reputation: 91409

One may try to start from e.g.:

package main

import "os"

func main() {
        println(os.Args[0])
}

$ go run main.go
/tmp/go-build135649844/command-line-arguments/_obj/a.out
$

(Tested on Linux only, but the os package should be cross platform where/if possible)

Upvotes: 1

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