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package main
import (
"fmt"
"io/ioutil"
"os"
"strings"
)
func main() {
counts := make(map[string]int)
for _, filename := range os.Args[1:] {
data, err := ioutil.ReadFile(filename)
if err != nil {
fmt.Fprintf(os.Stderr, "dup3: %v\n", err)
continue
}
for _, line := range strings.Split(string(data), "\n") {
fmt.Print(line) // This print is not print displayed!
counts[line]++
}
}
for line, n := range counts {
if n > 1 {
fmt.Printf("%d\t%s\n", n, line)
}
fmt.Println(line)
}
}
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