45 lines
654 B
Go
45 lines
654 B
Go
package main
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import (
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"fmt"
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"log"
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"net"
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"os"
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"strings"
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)
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var version string
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func main() {
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ips := os.Args[1:]
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switch {
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case len(ips) == 0:
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log.Fatal("Expect at least one argument")
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case len(ips) >= 2:
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log.Fatal("Expect only one argument")
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}
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ip := strings.Split(ips[0], "/")[0]
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interfaces, err := net.Interfaces()
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if err != nil {
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log.Fatal(err.Error())
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}
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for _, iface := range interfaces {
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addrs, err := iface.Addrs()
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if err != nil {
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log.Fatal(err.Error())
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}
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for _, addr := range addrs {
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if strings.Split(addr.String(), "/")[0] == ip {
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fmt.Fprintln(os.Stdout, iface.Name)
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return
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}
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}
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}
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os.Exit(1)
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}
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