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25 lines
373 B

package main
import (
"io"
"io/ioutil"
"os"
"github.com/01-edu/public/go/tests/lib"
)
func main() {
if len(os.Args) == 1 {
if _, err := io.Copy(os.Stdout, os.Stdin); err != nil {
panic(err)
}
} else {
for _, arg := range os.Args[1:] {
b, err := ioutil.ReadFile(arg)
if err != nil {
lib.Fatalln("ERROR:", err)
}
os.Stdout.Write(b)
}
}
}