ifconfig(1)

💖 ifconfig(1) — configure network interfaces 💖

okay so this is the manual page for ifconfig, bestie. It lives in the User's Reference Manual, and it's literally the girlboss of network interface configuration. Sit down, grab a strawberry 🍓, and let's get into it.

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✨ NAME ✨

ifconfig — configure network interfaces

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🌸 SYNOPSIS 🌸

ifconfig [option ...] name [addr] [broadcast brdaddr]
         [{ pointopoint | dstaddr } dstaddr] [netmask mask]
         [{ ether | hwaddr | lladdr } macaddr] [metric n] [mtu n]
         [txqueuelen n] [up | down] [flags]

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🦋 DESCRIPTION 🦋

Configure network interfaces. That's it, that's the whole vibe. 👑

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. (i.e. the long-option/short-option besties mirror each other exactly, no cap.)

The known flags are: allmulti, arp, automedia, broadcast, debug, dynamic, master, multicast, pointopoint, portsel, promisc, slave, trailers, up.

And the trick? Prepending no to any of these flags will negate their effect. So up is up and noup is... not. Iconic behaviour honestly. 💅

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💅 OPTIONS 💅

• -a, --all — Display all available interfaces. All of them. The whole roster. 🌈
• -A, --address addr — Set the interface address to addr.
• -B, --broadcast addr — (the original page just lists this one and dips, no description given, we move 🙈)
• -b, --brdaddr addr — Set the broadcast address to addr.
• -d, --dstaddr addr — (again, listed with zero explanation in the original, so no extra lore from me 🎀)
• -p, --peer addr — Set the destination (peer) address to addr.
• --up — Activate the interface. This is the default if an address is given.
• --down — Shut the interface down. 😭 She's resting.
• -F, --flags flag,[flag ...] — Set the interface flags.
• -i, --interface name — Configure the network interface name.
• -l, --list — List the available or selected interfaces.
• -m, --netmask mask — Set the netmask to mask.
• --metric n — Set the interface metric to n.
• -M, --mtu n — Set the interface MTU to n.
• --format format — Select the output format; set to help for information.
• -s, --short — Short output format. Minimalist queen. ✨
• -v, --verbose — Output information when configuring the interface.
• -?, --help — Give this help list.
• --usage — Give a short usage message.
• -V, --version — Print program version.

🐧 Linux-specific options:

• -T, --txqlen n — Set the transmit queue length to n.

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⭐ Reminder bestie: no in front of a flag flips it off. noup, noarp, you get it. That's the whole negate-your-flags moment and it applies to every single flag up there. 💖

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So yeah — that's ifconfig, brought to you by <b>GNU Network Utilities</b>, dated <b>February 9, 2019</b>. Go configure something cute. 🫶🌷💜