initial structure

Author: Matheus

go.mod

@@ -0,0 +1,3 @@
+module github.com/HashLoad/go-cmd-runner
+
+go 1.13

runner.go

@@ -0,0 +1,42 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os/exec"
+	"strings"
+)
+
+func RunCmd(dir, cmdName string) error {
+	fields := strings.Fields(cmdName)
+
+	cmd := exec.Command(fields[0], fields[1:]...)
+	cmd.Dir = dir
+	cmdReader, err := cmd.StdoutPipe()
+	cmdErr, _ := cmd.StderrPipe()
+	if err != nil {
+		return err
+	}
+	merged := io.MultiReader(cmdReader, cmdErr)
+	scanner := bufio.NewScanner(merged)
+	go func() {
+		for scanner.Scan() {
+			text := scanner.Text()
+			fmt.Printf("%s\n", text)
+		}
+
+	}()
+
+	err = cmd.Start()
+	if err != nil {
+		return err
+	}
+
+	err = cmd.Wait()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

runner_test.go

@@ -0,0 +1,13 @@
+package cmd
+
+import (
+	"log"
+	"testing"
+)
+
+func TestRunCmd(t *testing.T) {
+	err := RunCmd("/", "echo 'ok'")
+	if err != nil {
+		log.Fatal(err)
+	}
+}