43 lines
720 B
Go
43 lines
720 B
Go
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package main
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import (
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"fmt"
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"os"
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)
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var tmpFile = "./tmp.txt"
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func tmpPrint() {
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fmt.Println("output")
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}
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func main() {
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old := os.Stdout // keep backup of the real stdout
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w, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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fmt.Println(err)
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return
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}
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defer w.Close()
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os.Stdout = w
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tmpPrint()
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//outC := make(chan string)
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// copy the output in a separate goroutine so printing can't block indefinitely
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//go func() {
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// var buf bytes.Buffer
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// io.Copy(&buf, r)
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// outC <- buf.String()
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//}()
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// back to normal state
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//w.Close()
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os.Stdout = old // restoring the real stdout
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//out := <-outC
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// reading our temp stdout
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fmt.Println("previous output:")
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//fmt.Print(out)
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}
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