Last active
May 12, 2024 10:36
-
-
Save hivefans/ffeaf3964924c943dd7ed83b406bbdea to your computer and use it in GitHub Desktop.
get the realtime output for a shell command in golang|-|{"files":{"shell_output.go":{"env":"plain"}},"tag":"bigdata"}
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
import ( | |
"bufio" | |
"fmt" | |
"io" | |
"os" | |
"os/exec" | |
"strings" | |
) | |
func main() { | |
cmdName := "ping 127.0.0.1" | |
cmdArgs := strings.Fields(cmdName) | |
cmd := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...) | |
stdout, _ := cmd.StdoutPipe() | |
cmd.Start() | |
oneByte := make([]byte, 100) | |
num := 1 | |
for { | |
_, err := stdout.Read(oneByte) | |
if err != nil { | |
fmt.Printf(err.Error()) | |
break | |
} | |
r := bufio.NewReader(stdout) | |
line, _, _ := r.ReadLine() | |
fmt.Println(string(line)) | |
num = num + 1 | |
if num > 3 { | |
os.Exit(0) | |
} | |
} | |
cmd.Wait() | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Maybe you should use multiwritter:
cmd.Stdout = io.MultiWriter(os.Stdout, &stdout) cmd.Stderr = io.MultiWriter(os.Stderr, &stderr)