别人给公司做的网站字体侵权吗,南京英文网站制作,网络营销方式思维导图,广州网站推广平台go语言将cmd stdout和stderr作为字符串返回而不是打印到控制台
1、直接打印到控制台
从 golang 应用程序中执行 bash 命令#xff0c;现在 stdout 和 stderr 直接进入控制台#xff1a;
cmd.Stdout os.Stdout
cmd.Stderr os.Stderrpackage mainimport (fmt…go语言将cmd stdout和stderr作为字符串返回而不是打印到控制台
1、直接打印到控制台
从 golang 应用程序中执行 bash 命令现在 stdout 和 stderr 直接进入控制台
cmd.Stdout os.Stdout
cmd.Stderr os.Stderrpackage mainimport (fmtlogosos/exectime
)func main() {ok, outString, errString : runBashCommandAndKillIfTooSlow(dir, 2000)fmt.Println(ok)fmt.Println(ok)fmt.Println(outString)fmt.Println(outString)fmt.Println(errString)fmt.Println(errString)
}/*run bash command and kill it if it works longer than killInMilliSeconds milliseconds
*/
func runBashCommandAndKillIfTooSlow(command string, killInMilliSeconds time.Duration) (okResult bool, stdout, stderr string) {fmt.Println(running bash command...)fmt.Println(command)// Linux// cmd : exec.Command(sh, -c, command)// Windowscmd : exec.Command(cmd, /C, command)cmd.Stdout os.Stdout // cmd.Stdout - stdoutcmd.Stderr os.Stderr // cmd.Stderr - stderrokResult trueerr : cmd.Start()log.Printf(Waiting for command to finish...)done : make(chan error, 1)go func() {done - cmd.Wait()}()select {case -time.After(killInMilliSeconds * time.Millisecond):if err : cmd.Process.Kill(); err ! nil {log.Fatal(failed to kill: , err)okResult false}// allow goroutine to exit-donelog.Println(process killed)case err : -done:if err ! nil {log.Printf(process done with error %v, err)okResult false}}if err ! nil {log.Fatal(err)okResult false}return
}如果 bash 命令太慢( killInMilliSeconds 参数)程序应该保持其终止 bash 命令的能力。
希望 stdout 和 stderr 作为字符串变量从 runBashCommandAndKillIfTooSlow 函数返回而不立即打印到控
制台如何实现。
2、不打印到控制台
将输出设置为 strings.Builder 或 bytes.Buffer
var outbuf, errbuf strings.Builder // or bytes.Buffer
cmd.Stdout outbuf
cmd.Stderr errbuf运行命令后您可以通过调用 Builder.String() 获取字符串形式的标准输出和标准错误
stdout : outbuf.String()
stderr : errbuf.String()package mainimport (fmtlogos/execstringstime
)func main() {ok, outString, errString : runBashCommandAndKillIfTooSlow(dir, 2000)fmt.Println(ok)fmt.Println(ok)fmt.Println(outString)fmt.Println(outString)fmt.Println(errString)fmt.Println(errString)
}/*run bash command and kill it if it works longer than killInMilliSeconds milliseconds
*/
func runBashCommandAndKillIfTooSlow(command string, killInMilliSeconds time.Duration) (okResult bool, stdout, stderr string) {fmt.Println(running bash command...)fmt.Println(command)// Linux// cmd : exec.Command(sh, -c, command)// Windowscmd : exec.Command(cmd, /C, command)var outBuf, errBuf strings.Builder // or bytes.Buffercmd.Stdout outBufcmd.Stderr errBufokResult trueerr : cmd.Start()log.Printf(Waiting for command to finish...)done : make(chan error, 1)go func() {done - cmd.Wait()}()select {case -time.After(killInMilliSeconds * time.Millisecond):if err : cmd.Process.Kill(); err ! nil {log.Fatal(failed to kill: , err)okResult false}// allow goroutine to exit-donelog.Println(process killed)case err : -done:if err ! nil {log.Printf(process done with error %v, err)okResult false}}if err ! nil {log.Fatal(err)okResult false}stdout outBuf.String()stderr errBuf.String()return
}
