feat: support -o/--oneline

[waketzheng]

Closes #17

[brona]

Thanks for the PR, I will have to look into it more closely - I want to make sure this matches the output on linux.

Could you please post here comparable output of your script and output on some linux distro? Thanks

[waketzheng]

1. My mac is 11.7.10 (20G1427)

ip link

• python src/ip.py link

  1: lo0: <UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 status UNKNOWN
  link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: gif0: <POINTOPOINT,MULTICAST> mtu 1280 status UNKNOWN
  link/none
  3: stf0: <> mtu 1280 status UNKNOWN
  link/unknown
  4: en0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP
  link/ether b8:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  5: en1: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  6: en2: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:01 brd ff:ff:ff:ff:ff:ff
  7: bridge0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  8: p2p0: <UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 status DOWN
  link/ether 0a:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  9: awdl0: <UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484 status UP
  link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  10: llw0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP
  link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  11: utun0: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380 status UNKNOWN
  link/none
  12: utun1: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 status UNKNOWN
  link/none

• python src/ip.py -o link

  1: lo0: <UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 status UNKNOWN\    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: gif0: <POINTOPOINT,MULTICAST> mtu 1280 status UNKNOWN\    link/none
  3: stf0: <> mtu 1280 status UNKNOWN\    link/unknown
  4: en0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP\    link/ether b8:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  5: en1: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  6: en2: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:01 brd ff:ff:ff:ff:ff:ff
  7: bridge0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  8: p2p0: <UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 status DOWN\    link/ether 0a:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  9: awdl0: <UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484 status UP\    link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  10: llw0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP\    link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  11: utun0: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380 status UNKNOWN\    link/none
  12: utun1: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 status UNKNOWN\    link/none

  ip addr

• ip addr

  1: lo0: <UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 status UNKNOWN
  link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  inet 127.0.0.1/8
  inet6 ::1/128
  inet6 fe80::1/64
  2: gif0: <POINTOPOINT,MULTICAST> mtu 1280 status UNKNOWN
  link/none
  3: stf0: <> mtu 1280 status UNKNOWN
  link/unknown
  4: en0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP
  link/ether b8:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  inet6 fe80::858:6a05:a30b:fb63/64
  inet 7.249.178.166/23 brd 7.249.179.255
  5: en1: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  6: en2: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:01 brd ff:ff:ff:ff:ff:ff
  7: bridge0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status DOWN
  link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  8: p2p0: <UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 status DOWN
  link/ether 0a:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  9: awdl0: <UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484 status UP
  link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  inet6 fe80::a8e9:7bff:feb1:93ca/64
  10: llw0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP
  link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff
  inet6 fe80::a8e9:7bff:feb1:93ca/64
  11: utun0: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380 status UNKNOWN
  link/none
  inet6 fe80::becb:e0ba:3ce3:e6c7/64
  12: utun1: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 status UNKNOWN
  link/none
  inet6 fe80::5eb0:37b5:c492:d7cf/64

• python src/ip.py -o addr

  1: lo0: <UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 status UNKNOWN\    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00\    inet 127.0.0.1/8\    inet6 ::1/128\    inet6 fe80::1/64
  2: gif0: <POINTOPOINT,MULTICAST> mtu 1280 status UNKNOWN\    link/none
  3: stf0: <> mtu 1280 status UNKNOWN\    link/unknown
  4: en0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP\    link/ether b8:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff\    inet6 fe80::858:6a05:a30b:fb63/64\    inet 7.249.178.166/23 brd 7.249.179.255
  5: en1: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  6: en2: <UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:01 brd ff:ff:ff:ff:ff:ff
  7: bridge0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status DOWN\    link/ether 82:0f:02:80:5d:00 brd ff:ff:ff:ff:ff:ff
  8: p2p0: <UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 status DOWN\    link/ether 0a:e8:56:45:5a:40 brd ff:ff:ff:ff:ff:ff
  9: awdl0: <UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484 status UP\    link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff\    inet6 fe80::a8e9:7bff:feb1:93ca/64
  10: llw0: <UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 status UP\    link/ether aa:e9:7b:b1:93:ca brd ff:ff:ff:ff:ff:ff\    inet6 fe80::a8e9:7bff:feb1:93ca/64
  11: utun0: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380 status UNKNOWN\    link/none\    inet6 fe80::becb:e0ba:3ce3:e6c7/64
  12: utun1: <UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 status UNKNOWN\    link/none\    inet6 fe80::5eb0:37b5:c492:d7cf/64

2. My cloud server

 ~ » cat /etc/issue
Ubuntu 22.04.4 LTS \n \l

ip link

• verbose output(ip link)

  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
  link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
  link/ether 00:16:3e:10:7a:6c brd ff:ff:ff:ff:ff:ff
  altname enp0s5
  altname ens5
  3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default
  link/ether 02:42:43:fb:1d:cd brd ff:ff:ff:ff:ff:ff
  4: br-5f24f722517c: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default
  link/ether 02:42:3a:b8:97:a8 brd ff:ff:ff:ff:ff:ff
  32: vethf2e447c@if31: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT group default
  link/ether ba:21:0a:94:43:f0 brd ff:ff:ff:ff:ff:ff link-netnsid 2

• shorter (ip -o link)

  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000\    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000\    link/ether 00:16:3e:10:7a:6c brd ff:ff:ff:ff:ff:ff\    altname enp0s5\    altname ens5
  3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default \    link/ether 02:42:43:fb:1d:cd brd ff:ff:ff:ff:ff:ff
  4: br-5f24f722517c: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default \    link/ether 02:42:3a:b8:97:a8 brd ff:ff:ff:ff:ff:ff
  32: vethf2e447c@if31: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT group default \    link/ether ba:21:0a:94:43:f0 brd ff:ff:ff:ff:ff:ff link-netnsid 2

  ip addr

• ip addr

  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
  link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  inet 127.0.0.1/8 scope host lo
     valid_lft forever preferred_lft forever
  inet6 ::1/128 scope host
     valid_lft forever preferred_lft forever
  2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
  link/ether 00:16:3e:10:7a:6c brd ff:ff:ff:ff:ff:ff
  altname enp0s5
  altname ens5
  inet 172.22.42.25/18 metric 100 brd 172.22.63.255 scope global dynamic eth0
     valid_lft 307133302sec preferred_lft 307133302sec
  inet6 fe80::216:3eff:fe10:7a6c/64 scope link
     valid_lft forever preferred_lft forever
  3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
  link/ether 02:42:43:fb:1d:cd brd ff:ff:ff:ff:ff:ff
  inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
     valid_lft forever preferred_lft forever
  inet6 fe80::42:43ff:fefb:1dcd/64 scope link
     valid_lft forever preferred_lft forever
  4: br-5f24f722517c: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
  link/ether 02:42:3a:b8:97:a8 brd ff:ff:ff:ff:ff:ff
  inet 172.18.0.1/16 brd 172.18.255.255 scope global br-5f24f722517c
     valid_lft forever preferred_lft forever
  inet6 fe80::42:3aff:feb8:97a8/64 scope link
     valid_lft forever preferred_lft forever
  32: vethf2e447c@if31: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
  link/ether ba:21:0a:94:43:f0 brd ff:ff:ff:ff:ff:ff link-netnsid 2
  inet6 fe80::b821:aff:fe94:43f0/64 scope link
     valid_lft forever preferred_lft forever

• ip -o addr

  1: lo    inet 127.0.0.1/8 scope host lo\       valid_lft forever preferred_lft forever
  1: lo    inet6 ::1/128 scope host \       valid_lft forever preferred_lft forever
  2: eth0    inet 172.22.42.25/18 metric 100 brd 172.22.63.255 scope global dynamic eth0\       valid_lft 307133237sec preferred_lft 307133237sec
  2: eth0    inet6 fe80::216:3eff:fe10:7a6c/64 scope link \       valid_lft forever preferred_lft forever
  3: docker0    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0\       valid_lft forever preferred_lft forever
  3: docker0    inet6 fe80::42:43ff:fefb:1dcd/64 scope link \       valid_lft forever preferred_lft forever
  4: br-5f24f722517c    inet 172.18.0.1/16 brd 172.18.255.255 scope global br-5f24f722517c\       valid_lft forever preferred_lft forever
  4: br-5f24f722517c    inet6 fe80::42:3aff:feb8:97a8/64 scope link \       valid_lft forever preferred_lft forever
  32: vethf2e447c    inet6 fe80::b821:aff:fe94:43f0/64 scope link \       valid_lft forever preferred_lft forever