mirror of
https://github.com/ceph/ceph-csi.git
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56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package exec_test
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import (
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"fmt"
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"io/ioutil"
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"k8s.io/utils/exec"
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)
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func ExampleNew_stderrPipe() {
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cmd := exec.New().Command("/bin/sh", "-c", "echo 'We can read from stderr via pipe!' >&2")
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stderrPipe, err := cmd.StderrPipe()
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if err != nil {
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panic(err)
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}
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stderr := make(chan []byte)
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go func() {
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b, err := ioutil.ReadAll(stderrPipe)
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if err != nil {
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panic(err)
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}
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stderr <- b
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}()
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if err := cmd.Start(); err != nil {
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panic(err)
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}
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received := <-stderr
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if err := cmd.Wait(); err != nil {
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panic(err)
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}
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fmt.Println(string(received))
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// Output: We can read from stderr via pipe!
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}
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