Started project, created minimal shell

executor/executor.go

@@ -0,0 +1,45 @@
+// Package executor exec commands
+package executor
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func Exec(line string) {
+	line = strings.TrimSpace(line)
+	if line == "" {
+		return
+	}
+
+	args := strings.Fields(line)
+	command := args[0]
+	commandArgs := args[1:]
+
+	if command == "exit" {
+		fmt.Println("Bye Bye my small deer :3")
+		os.Exit(0)
+	}
+
+	if command == "cd" {
+		if len(commandArgs) < 1 {
+			fmt.Fprintln(os.Stderr, "cd: argument was skipped")
+			return
+		}
+		if err := os.Chdir(commandArgs[0]); err != nil {
+			fmt.Fprintln(os.Stderr, err)
+		}
+		return
+	}
+
+	cmd := exec.Command(command, commandArgs...)
+	cmd.Stdin = os.Stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	if err := cmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Execution error: %v\n", err)
+	}
+}