portainer-devtool/go/utils/command.go

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686 B
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package utils
import (
"bufio"
"fmt"
"os/exec"
)
func RunCommandWithStdoutPipe(workdir, progName string, args ...string) error {
cmd := exec.Command(progName, args...)
cmd.Dir = workdir
out, err := cmd.StdoutPipe()
if err != nil {
return err
}
scanner := bufio.NewScanner(out)
go func() {
counter := 0
for scanner.Scan() {
if counter > 10 {
// Swallow the output
if counter%50 == 0 {
fmt.Printf("output %d lines in total.\n", counter)
}
counter++
continue
}
PrintOutput("", scanner.Bytes())
counter++
}
}()
err = cmd.Start()
if err != nil {
return err
}
err = cmd.Wait()
if err != nil {
return err
}
return nil
}