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README.md

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+## shell-extender
+### 项目简介：对os/exec包进行扩展，增加其功能。
+- ExecShellCommand 执行命令
+- ExecShellCommandWithResult 执行命令并输出所有结果
+- ExecShellCommandWithTimeout 执行命令并超时时间
+- ExecShellCommandWithChan 执行命令并使用管道输出 
+
+### 示例1 
+**使用方法**
+```go
+func main() {
+    fmt.Println("==============ExecShellCommand=================")
+    out, i, err := command.ExecShellCommand("kubectl get node")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+
+    fmt.Printf("i: %v, out: %s", i, out)
+    fmt.Println("===============================")
+
+    fmt.Println("==============ExecShellCommandWithResult=================")
+    stdout, stderr, code, err := command.ExecShellCommandWithResult("kubectl get node")
+    fmt.Printf("stdout: %v, stderr: %s, code: %v, err: %v\n", stdout, stderr, code, err)
+    fmt.Println("===============================")
+
+    fmt.Println("==============ExecShellCommandWithTimeout=================")
+    stdout, stderr, code, err = command.ExecShellCommandWithTimeout("sleep 10; kubectl get node", 3)
+    fmt.Printf("stdout: %v, stderr: %s, code: %v, err: %v\n", stdout, stderr, code, err)
+    fmt.Println("===============================")
+
+    fmt.Println("==============ExecShellCommandWithChan=================")
+    outputC := make(chan string, 10)
+
+    go func() {
+    for i := range outputC {
+            fmt.Println("output line: ", i)
+        }
+    }()
+
+    err = command.ExecShellCommandWithChan("kubectl get node", outputC)
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    fmt.Println("===============================")
+}
+
+
+```