initial working command

internal/cmd/cmd.go

@@ -0,0 +1,28 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+)
+
+type Runner interface {
+	Run(context.Context, string, ...any) ([]byte, error)
+}
+
+type ZRunner struct {
+	Prog string
+	Args []string
+}
+
+func (runner *ZRunner) Run(ctx context.Context, command string, formatArgs ...any) ([]byte, error) {
+	var subArgs string
+	if len(formatArgs) > 0 {
+		subArgs = fmt.Sprintf(command, formatArgs...)
+	} else {
+		subArgs = command
+	}
+	args := append(runner.Args, subArgs)
+	cmd := exec.Command(runner.Prog, args...)
+	return cmd.CombinedOutput()
+}

internal/cmd/cmd_test.go

@@ -0,0 +1,21 @@
+package cmd_test
+
+import (
+	"context"
+	"testing"
+
+	"git.gentoo.party/sam/thanks/internal/cmd"
+)
+
+func Test_ZCommand(t *testing.T) {
+	localRunner := &cmd.ZRunner{
+		Prog: "/bin/sh",
+		Args: []string{"-c"},
+	}
+
+	zfsList := "zfs list %s"
+	out, err := localRunner.Run(context.TODO(), zfsList, "zroot")
+	if err != nil {
+		t.Errorf("localRunner failed: %s\n\n%s", err.Error(), out)
+	}
+}