c/os: fork/exec

_demo/cexec/exec.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"runtime"
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/os"
+)
+
+func main() {
+	ls := c.Str("ls")
+	args := []*c.Char{ls, c.Str("-l"), nil}
+	if runtime.GOOS == "windows" {
+		ls = c.Str("dir")
+		args = []*c.Char{ls, nil}
+	}
+
+	os.Execvp(ls, unsafe.SliceData(args))
+}

_demo/sysexec/exec.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"os/exec"
+	"runtime"
+	"syscall"
+)
+
+func main() {
+	ls := "ls"
+	args := []string{"ls", "-l"}
+	if runtime.GOOS == "windows" {
+		ls = "dir"
+		args = nil
+	}
+	lspath, _ := exec.LookPath(ls)
+	if lspath != "" {
+		ls = lspath
+	}
+	err := syscall.Exec(ls, args, nil)
+	if err != nil {
+		fmt.Println("syscall.Exec error:", err)
+		return
+	}
+}