diff --git a/g/os/gproc/gproc_comm.go b/g/os/gproc/gproc_comm.go
index 763805234..7728c0897 100644
--- a/g/os/gproc/gproc_comm.go
+++ b/g/os/gproc/gproc_comm.go
@@ -28,12 +28,6 @@ type Msg struct {
     Group string  // 分组名称
 }
 
-// TCP通信数据结构定义
-type sendQueueItem struct {
-    Pid  int    // PID，发向哪个进程
-    Data []byte // 数据
-}
-
 // 获取指定进程的通信文件地址
 func getCommFilePath(pid int) string {
     return getCommDirPath() + gfile.Separator + gconv.String(pid)
diff --git a/g/os/gproc/gproc_comm_receive.go b/g/os/gproc/gproc_comm_receive.go
index dbf52a975..a6f124bc5 100644
--- a/g/os/gproc/gproc_comm_receive.go
+++ b/g/os/gproc/gproc_comm_receive.go
@@ -76,6 +76,7 @@ func tcpServiceHandler(conn *gtcp.Conn) {
                     break
                 }
             }
+            // 成功时会返回ok给peer
             if len(result) == 0 {
                 result = []byte("ok")
                 for _, msg := range msgs {
@@ -129,9 +130,9 @@ func bufferToMsgs(buffer []byte) []*Msg {
     return msgs
 }
 
-// 获取其他进程传递到当前进程的消息包，阻塞执行
+// 获取其他进程传递到当前进程的消息包，阻塞执行。
 func Receive(group...string) *Msg {
-    // 开启端口监听
+    // 开启接收协程时才会开启端口监听
     go startTcpListening()
 
     var queue *gqueue.Queue
diff --git a/g/os/gproc/gproc_comm_send.go b/g/os/gproc/gproc_comm_send.go
index 4b10c5a7b..94ed30f14 100644
--- a/g/os/gproc/gproc_comm_send.go
+++ b/g/os/gproc/gproc_comm_send.go
@@ -16,6 +16,7 @@ import (
     "time"
     "bytes"
     "gitee.com/johng/gf/g/os/glog"
+    "io"
 )
 
 const (
@@ -55,8 +56,8 @@ func Send(pid int, data []byte, group...string) error {
                     break
                 }
             }
-
-            if err == nil {
+            // EOF不算异常错误
+            if err == nil || err == io.EOF {
                 break
             } else {
                 glog.Error(err)
diff --git a/geg/os/gproc/cmd.go b/geg/os/gproc/cmd.go
deleted file mode 100644
index 0cd84127f..000000000
--- a/geg/os/gproc/cmd.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package main
-
-import (
-    "os"
-    "fmt"
-    "time"
-    "os/exec"
-)
-
-func main () {
-    cmd := exec.Command(os.Args[0], "1")
-    time.Sleep(3*time.Second)
-    fmt.Println(cmd.Start())
-    time.Sleep(time.Hour)
-}
diff --git a/geg/os/gproc/gproc.go b/geg/os/gproc/gproc.go
index f8b103902..0bb2628cf 100644
--- a/geg/os/gproc/gproc.go
+++ b/geg/os/gproc/gproc.go
@@ -7,6 +7,7 @@ import (
     "gitee.com/johng/gf/g/os/gproc"
 )
 
+// 父子进程基本演示
 func main () {
     if gproc.IsChild() {
         glog.Printfln("%d: Hi, I am child, waiting 3 seconds to die", gproc.Pid())
diff --git a/geg/os/gproc/gproc2.go b/geg/os/gproc/gproc2.go
index ae9590215..80a24eed8 100644
--- a/geg/os/gproc/gproc2.go
+++ b/geg/os/gproc/gproc2.go
@@ -5,6 +5,7 @@ import (
     "gitee.com/johng/gf/g/os/gproc"
 )
 
+// 使用gproc kill指定其他进程(清确保运行该程序的用户有足够权限)
 func main () {
     pid := 28536
     m   := gproc.NewManager()
diff --git a/geg/os/gproc/gproc3.go b/geg/os/gproc/gproc3.go
index caf4ccfaf..ced9c5b01 100644
--- a/geg/os/gproc/gproc3.go
+++ b/geg/os/gproc/gproc3.go
@@ -7,7 +7,8 @@ import (
     "gitee.com/johng/gf/g/os/gproc"
 )
 
-// 父进程销毁后，请使用进程管理器查看存活的子进程
+// 父进程销毁后，使用进程管理器查看存活的子进程。
+// 请使用go build编译后运行，不要使用IDE运行，因为IDE大多采用的是子进程方式执行。
 func main () {
     if gproc.IsChild() {
         glog.Printfln("%d: I am child, waiting 10 seconds to die", gproc.Pid())
diff --git a/geg/os/gproc/gproc4.go b/geg/os/gproc/gproc4.go
index db5eddf12..a65df93c3 100644
--- a/geg/os/gproc/gproc4.go
+++ b/geg/os/gproc/gproc4.go
@@ -8,7 +8,7 @@ import (
     "gitee.com/johng/gf/g/os/gproc"
 )
 
-// 查看进程的环境变量
+// 查看父子进程的环境变量
 func main () {
     time.Sleep(5*time.Second)
     glog.Printfln("%d: %v", gproc.Pid(), genv.All())
diff --git a/geg/os/gproc/gproc5.go b/geg/os/gproc/gproc_shellexec.go
similarity index 71%
rename from geg/os/gproc/gproc5.go
rename to geg/os/gproc/gproc_shellexec.go
index b83bbe54a..8abb43624 100644
--- a/geg/os/gproc/gproc5.go
+++ b/geg/os/gproc/gproc_shellexec.go
@@ -7,6 +7,6 @@ import (
 
 // 执行shell指令
 func main () {
-    r, err := gproc.ShellExec("echo 'hello';")
+    r, err := gproc.ShellExec("sleep 3s; echo 'hello';")
     fmt.Println("result:", r, err)
 }