How to execute shell command

Question

I have some trouble with execute shell commands from a Go program:

  var command = pwd + "/build " + file_name

  dateCmd := exec.Command(string(command))
  dateOut, err := dateCmd.Output()
  check(err)

If command variable equals a single word like /home/slavik/project/build (build is shell script) it works, but if I try to pass some arg i.e. /home/slavik/project/build xxx or /home/slavik/project/build -v=1 the Go program raises an exception like file /home/slavik/project/build not found

What's wrong with my code?

Take a look here, too: gobyexample.com/execing-processes

elithrar
– elithrar

2013-06-09 12:30:09 +00:00
Commented Jun 9, 2013 at 12:30 — elithrar
– elithrar, Commented Jun 9, 2013 at 12:30

earl · Accepted Answer · 2013-06-09 11:28:44Z

9

You have to pass the program and the arguments separately. See the signature of exec.Command:

func Command(name string, arg ...string) *Cmd

So if you want to pass e.g. -v=1, your call probably should look something like:

dateCmd := exec.Command(pwd + "/build", "-v=1")

answered Jun 9, 2013 at 11:28

earl

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zzzz · Accepted Answer · 2013-06-09 11:29:57Z

4

Use

exec.Command(pwd + "/build", fileName)

answered Jun 9, 2013 at 11:29

zzzz

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