¿Cómo encontrar el servicio de red actualmente conectado desde la línea de comandos?

Simplemente publique

    ifconfig

Listar todas las interfaces de red y su estado.

Juntándolo todo, escribí un script para realizar esta tarea:

#!/bin/bash

services=$(networksetup -listnetworkserviceorder | grep 'Hardware Port')

while read line; do
    sname=$(echo $line | awk -F  "(, )|(: )|[)]" '{print $2}')
    sdev=$(echo $line | awk -F  "(, )|(: )|[)]" '{print $4}')
    #echo "Current service: $sname, $sdev, $currentservice"
    if [ -n "$sdev" ]; then
        ifout="$(ifconfig $sdev 2>/dev/null)"
        echo "$ifout" | grep 'status: active' > /dev/null 2>&1
        rc="$?"
        if [ "$rc" -eq 0 ]; then
            currentservice="$sname"
            currentdevice="$sdev"
            currentmac=$(echo "$ifout" | awk '/ether/{print $2}')

            # may have multiple active devices, so echo it here
            echo "$currentservice, $currentdevice, $currentmac"
        fi
    fi
done <<< "$(echo "$services")"

if [ -z "$currentservice" ]; then
    >&2 echo "Could not find current service"
    exit 1
fi

El script primero obtiene una lista de servicios del comando networksetup , luego verifica si cada servicio está en estado activo de ifconfig .

Nombre el script a networkservice.sh por ejemplo, luego ejecútelo para obtener el servicio de red actual en el que se encuentra.

$ bash networkservice.sh
USB 10/100/1000 LAN, en4, 00:e0:4a:6b:4d:0c
Wi-Fi, en0, 8c:85:90:a0:4b:ec

El comando scutil --dns le brinda toda la información de enrutamiento de red que necesitará para asignar etiquetas de interfaz de hardware a las rutas de red.

Un poco awk y grep pueden embellecerlo si necesita escribir la información o reducirla. Comience con el agarre de "if_index" si tiene curiosidad.

No pretenderé tener ordenada la respuesta a esta pregunta, pero esto, pero esto puede ser útil.

Puedes preguntar cómo enrutará actualmente los paquetes a algo:

$ route get example.com | grep interface
interface: en8

Y luego puede preguntar qué "Servicio de red" está administrando esa interfaz:

$ networksetup -listnetworkserviceorder | grep en8
(Hardware Port: Broadcom NetXtreme Gigabit Ethernet Controller, Device: en8)

Pero honestamente, dudo que un "Servicio de red" sea uno a uno con un puerto de hardware. Y algunas interfaces, tun0 por ejemplo, no tienen un "Servicio de red". Bueno, al menos a veces no lo hacen.

En caso de que alguien más se tropiece con esto como lo hice, el código a continuación puede ser más de lo que está buscando.

Esto es para expandir la respuesta de PeterVP

También se puede ver en enlace

#!/bin/sh

clear
sExternalMACALService="http://dns.kittell.net/macaltext.php?address="

# List all Network ports
NetworkPorts=$(ifconfig -uv | grep '^[a-z0-9]' | awk -F : '{print $1}')
#echo $NetworkPorts

# Function to convert IP Subnet Mask to CIDR
mask2cdr ()
{
# Assumes there's no "255." after a non-255 byte in the mask
local x=${1##*255.}
set -- 0^^^128^192^224^240^248^252^254^ $(( (${#1} - ${#x})*2 )) ${x%%.*}
x=${1%%$3*}
echo $(( $2 + (${#x}/4) ))
}

# Get remote/public IP address
remoteip=$(dig +short myip.opendns.com @resolver1.opendns.com)

# Get computer name
computername=$(scutil --get ComputerName)

# Get serial number
sSerialNumber=$(system_profiler SPHardwareDataType |grep "Serial Number (system)" |awk '{print $4}'  | cut -d/ -f1)
#echo $sSerialNumber

# Get operating system name and version - Start
OSvers1=$( sw_vers -productVersion | cut -d. -f1 )
OSvers2=$( sw_vers -productVersion | cut -d. -f2 )
OSvers3=$( sw_vers -productVersion | cut -d. -f3 )
case $OSvers2 in
8)
OSName="Mountain Lion"
;;
9)
OSName="Mavericks"
;;
10)
OSName="Yosemite"
;;
11)
OSName="El Capitan"
;;
12)
OSName="Sierra"
;;
default)
OSName="Unknown"
;;
esac
# Get operating system name and version - Stop


echo "$computername"
echo "--------------"
echo "      Computer OS:  Mac OS X - $OSName $OSvers1.$OSvers2.$OSvers3"
echo "    Computer Name:  $computername"
echo "Current User Name:  $(whoami)"
echo "    Serial Number:  $sSerialNumber"

if [[ $remoteip ]]; then
echo "Remote IP Address:  $remoteip\n"
else
echo "Remote IP Address:  Unable To Determine\n"
fi

for val in $NetworkPorts; do   # Get for all available hardware ports their status
activated=$(ifconfig -uv "$val" | grep 'status: ' | awk '{print $2}')
#echo $activated
label=$(ifconfig -uv "$val" | grep 'type' | awk '{print $2}')
#echo $label
#ActiveNetwork=$(route get default | grep interface | awk '{print $2}')
ActiveNetworkName=$(networksetup -listallhardwareports | grep -B 1 "$label" | awk '/Hardware Port/{ print }'|cut -d " " -f3- | uniq)
#echo $ActiveNetwork
#echo $ActiveNetworkName
state=$(ifconfig -uv "$val" | grep 'status: ' | awk '{print $2}')
#echo $state
ipaddress=$(ifconfig -uv "$val" | grep 'inet ' | awk '{print $2}')
# echo $ipaddress

if [[ -z $(ifconfig -uv "$val" | grep 'link rate: ' | awk '{print $3, $4}' | sed 'N;s/\n/ up /' ) ]]; then
networkspeed="$(ifconfig -uv "$val" | grep 'link rate: ' | awk '{print $3}' ) up/down"
else
networkspeed="$(ifconfig -uv "$val" | grep 'link rate: ' | awk '{print $3, $4}' | sed 'N;s/\n/ up /' ) down"
fi

#echo $networkspeed
macaddress=$(ifconfig -uv "$val" | grep 'ether ' | awk '{print $2}')
#echo $macaddress
macal=$(curl -s "$sExternalMACALService$macaddress")
#echo $macal
quality=$(ifconfig -uv "$val" | grep 'link quality:' | awk '{print $3, $4}')
#echo $quality
netmask=$(ipconfig getpacket "$val" | grep 'subnet_mask (ip):' | awk '{print $3}')
#echo $netmask
router=$(ipconfig getpacket "$val" | grep 'router (ip_mult):' | sed 's/.*router (ip_mult): {\([^}]*\)}.*//')
#echo $router
DHCPActive=$(networksetup -getinfo "Wi-Fi" | grep DHCP)
#echo $DHCPActive
dnsserver=$(networksetup -getdnsservers "$ActiveNetworkName" | awk '{print $1, $2}' | sed 'N;s/\n//' )
#echo $dnsserver

if [ "$activated" = 'active' ]; then
#echo "Network Port is Active"
if [[ $ipaddress ]]; then
echo "$ActiveNetworkName ($val)"
echo "--------------"
# Is this a WiFi associated port? If so, then we want the network name
if [ "$label" = "Wi-Fi" ]; then
WiFiName=$(/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -I | grep '\sSSID:' | sed 's/.*: //')
#echo $WiFiName
echo "     Network Name:  $WiFiName"
fi

echo "       IP Address:  $ipaddress"
echo "      Subnet Mask:  $netmask"
echo "           Router:  $router"
echo "          IP CIDR:  $ipaddress/$(mask2cdr $netmask)"

if [[ -z $dnsserver ]]; then
if [[ $DHCPActive ]]; then
echo "       DNS Server:  Set With DHCP"
else
echo "       DNS Server:  Unknown"
fi
else
echo "       DNS Server:  $dnsserver"
fi

echo "      MAC-address:  $macaddress ($macal)"
echo "    Network Speed:  $networkspeed"
echo "     Link quality:  $quality"
echo " "
fi

# Don't display the inactive ports.
fi

done

Tomado de Encuentre el historial detallado de conexiones Wi-Fi en Línea de comandos de Mac OS X | OSXDaily :

  

Para las versiones modernas de Mac OS X, OS X Yosemite 10.10 y posteriores, use lo siguiente:

defaults read /Library/Preferences/SystemConfiguration/com.apple.airport.preferences |grep LastConnected -A 7

  

Haga clic en regresar y verá instantáneamente la lista completa de detalles de conexión de red inalámbrica.

Obtienes mucha información sobre el historial de conexiones, incluidos los detalles de la actual.

No es perfecto, pero obtienes la información que estás buscando, ¡y mucha más información adicional!

Aquí hay un script de shell de pez que escribí:

function netinfo -d "get network information"

  # Get public ip address
  set public (dig +short myip.opendns.com @resolver1.opendns.com)
  set hostname (uname -n)

  if test -z "$public" # We got an empty string, meaning:
    set public "No Internet connection available"
  end

  echo ''
  echo "    Public IP: $public"
  echo "     Hostname: $hostname"
  echo ''

  # Get all available hardware ports
  set ports (ifconfig -uv | grep '^[a-z0-9]' | awk -F : '{print $1}')

  # Get for all available hardware ports their status
  for val in $ports
    set activated (ifconfig -uv $val | grep 'status: ' | awk '{print $2}')

    # We want information about active network ports...
    if test $activated = 'active' ^/dev/null
      set ipaddress (ifconfig -uv $val | grep 'inet ' | awk '{print $2}')

      # and of these, the ones with an IP-address assigned to it
      if test -n "$ipaddress" ^/dev/null

        # Do we have an IP address?
        # Then give us the information
        set label (ifconfig -uv $val | grep 'type' | awk '{print $2}')
        set macaddress (ifconfig -uv $val | grep 'ether ' | awk '{print $2}')
        set quality (ifconfig -uv $val | grep 'link quality:' | awk '{print $3, $4}')
        set netmask (ipconfig getpacket $val | grep 'subnet_mask (ip):' | awk '{print $3}')
        set router (ipconfig getpacket $val | grep 'router (ip_mult):' | sed 's/.*router (ip_mult): {\([^}]*\)}.*//')
        set dnsserver (ipconfig getpacket $val | grep 'domain_name_server (ip_mult):' | sed 's/.*domain_name_server (ip_mult): {\([^}]*\)}.*//')

        # Header for the network interfaces
        echo -n $label ; echo -n ' ('; echo -n $val ; echo ')'
        echo "--------------"

        # Is this a WiFi associated port? If so, then we want the network name
        switch $label
          case Wi-Fi
            # Get WiFi network name
            set wifi_name (/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -I | grep '\sSSID:' | sed 's/.*: //')
            echo " Network Name: $wifi_name"
            # Networkspeed for Wi-Fi
            set networkspeed (/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -I | grep lastTxRate: | sed 's/.*: //' | sed 's/$/ Mbps/')
          case '*'
            # Networkspeed  for other ports
            set networkspeed (ifconfig -uv $val | grep 'link rate:' | awk '{print $3, $4}')
        end

        echo "   IP-address: $ipaddress"
        echo "  Subnet Mask: $netmask"
        echo "       Router: $router"
        echo "   DNS Server: $dnsserver"
        echo "  MAC-address: $macaddress"
        echo "Network Speed: $networkspeed"
        echo " Link quality: $quality"
        echo ''
      end

      # Don't display the inactive ports.
    else if test $activated = 'inactive' ^/dev/null
    end
  end
end

Muestra todas las interfaces de red activas y datos relevantes.

Comenta lo que no quieres / necesitas