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exec.go
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exec.go
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// Copyright (C) 2020-2021, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package ext_exec
import (
"context"
"fmt"
"os"
"os/exec"
"strings"
)
// GetOutputFromCmd exec the cmd and return the combined output.
func GetOutputFromCmd(ctx context.Context, cmd string) ([]byte, error) {
ss := strings.Split(cmd, " ")
name := ss[0]
args := ss[1:]
c := exec.CommandContext(ctx, name, args...)
c.Stderr = os.Stderr
out, err := c.Output()
if err != nil {
if len(out) != 0 {
return nil, fmt.Errorf("cmd err: %w, output: %s", err, string(out))
}
return nil, err
}
return out, nil
}