The network adapter name is easy to return on Linux. This simple one-liner will give this information to the user.
jason@Yog-Sothoth » ~ » $ ip -o -4 route show to default | awk '{print $5}'
enp0s25
Using this information to get information about a network adapter.
jason@Yog-Sothoth » ~ » $ ethtool -T `ip -o -4 route show to default | awk '{print $5}'`
Time stamping parameters for enp0s25:
Capabilities:
hardware-transmit (SOF_TIMESTAMPING_TX_HARDWARE)
software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE)
hardware-receive (SOF_TIMESTAMPING_RX_HARDWARE)
software-receive (SOF_TIMESTAMPING_RX_SOFTWARE)
software-system-clock (SOF_TIMESTAMPING_SOFTWARE)
hardware-raw-clock (SOF_TIMESTAMPING_RAW_HARDWARE)
PTP Hardware Clock: 0
Hardware Transmit Timestamp Modes:
off (HWTSTAMP_TX_OFF)
on (HWTSTAMP_TX_ON)
Hardware Receive Filter Modes:
none (HWTSTAMP_FILTER_NONE)
all (HWTSTAMP_FILTER_ALL)
ptpv1-l4-sync (HWTSTAMP_FILTER_PTP_V1_L4_SYNC)
ptpv1-l4-delay-req (HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ)
ptpv2-l4-sync (HWTSTAMP_FILTER_PTP_V2_L4_SYNC)
ptpv2-l4-delay-req (HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ)
ptpv2-l2-sync (HWTSTAMP_FILTER_PTP_V2_L2_SYNC)
ptpv2-l2-delay-req (HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ)
ptpv2-event (HWTSTAMP_FILTER_PTP_V2_EVENT)
ptpv2-sync (HWTSTAMP_FILTER_PTP_V2_SYNC)
ptpv2-delay-req (HWTSTAMP_FILTER_PTP_V2_DELAY_REQ)
Getting IP address information from the active network adapter.
ason@Yog-Sothoth » ~ » $ ifconfig `ip -o -4 route show to default | awk '{print $5}'`
enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.2 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fdc8:1451:5fa9:4700:f50e:cce8:bb61:9131 prefixlen 64 scopeid 0x0<global>
inet6 fdc8:1451:5fa9:4700:a099:dc55:dcdf:85be prefixlen 64 scopeid 0x0<global>
inet6 fe80::79c1:da6a:20ed:3d13 prefixlen 64 scopeid 0x20<link>
ether d0:50:99:0d:ab:0f txqueuelen 1000 (Ethernet)
RX packets 321273 bytes 451154182 (451.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 185381 bytes 15916566 (15.9 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xf3900000-f3920000
How to return the MAC address of a network interface on Linux.
jason@Yog-Sothoth » ~ » $ ifconfig `ip -o -4 route show to default | awk '{print $5}'` | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
d0:50:99:0d:ab:0f
This is a long one-liner, but works very well. Would be very good to have in a script.