Run Golang script from shell script

Question

I'm trying to run my golang program whenever I log into OSX. I'm trying the following script with Automator:

#!/bin/sh
export GOPATH=/Volumes/DTSE9/worker
go run /Volumes/worker/worker.go

Whenever I run this with Automator, it tells me go: command not found

So go isn't in the PATH. You either add it to the PATH, or us a full path. — Mr_Pink
– Mr_Pink, Commented Mar 17, 2017 at 19:14
@JimB Do you mean add export GOROOT=/usr/local/go/bin/go above the first export? Just tried that and it doesn't work. — Soubriquet
– Soubriquet, Commented Mar 17, 2017 at 19:18
No, don't set GOROOT (and that's not a valid value for GOROOT anyway). If /usr/local/go/bin isn't in your path, you need to add it to your PATH, or use /usr/local/go/bin/go run — Mr_Pink
– Mr_Pink, Commented Mar 17, 2017 at 19:20
But why not just compile the program and run the executable? It will run faster and won't depend on the state of GOPATH. — Mr_Pink
– Mr_Pink, Commented Mar 17, 2017 at 19:21

Kaveh Shahbazian · Accepted Answer · 2024-03-09 16:10:00Z

4

Create a file like say file.go and it's content should look like:

///path-to/bin/go run $0 $@; exit $?

package main

func main() {
    println("Hello World!")
}

Then run chmod +x file.go and then you can execute it as ./file.go p1 p2.

Edit: This works on Ubuntu. I did not saw that OSX was in question.

This is another version of the first line which does not require the path to the go command (tested on zsh):

///$(which go) run $0 $@; exit $?

edited Mar 9, 2024 at 16:10

answered Mar 17, 2017 at 19:23

Kaveh Shahbazian

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10 Comments

Mr_Pink Over a year ago

lol, really taking the term "go script" literally, but it is a neat hack ;). It should run fine on macOS too.

Soubriquet Over a year ago

Just tried that and got: go: unknown subcommand "./main.go" Run 'go help' for usage.

Kaveh Shahbazian Over a year ago

You do not need to call go command anymore - just $ ./main.go. And I'm using it on Ubuntu; though I'm not familiar with OSX, but since it's a POSIX compatible OS (& as I understand, has bash), this should work on OSX too.

Soubriquet Over a year ago

@KavehShahbazian yeah, that's what I did. $ ./main.go and I got the above error message.

Kaveh Shahbazian Over a year ago

Then it's something about OSX that I'm not aware of (but a guess is at the first line instead of /path-to/go run you just have /path-to/go).

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