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---
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title: Archlinux
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date: 2023-11-29T20:33:48+0100
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lastmod: 2024-04-14T09:49:14+0000
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tags:
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- archlinux
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#showDate: false
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showReadingTime: false
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showWordCount: false
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showPagination: false
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#showAuthor: false
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showBreadcrumbs: true
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feed_exclude: true
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# site_exclude: true
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draft: true
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---
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## Predictable network interfaces
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Get back the "old" interface names like `eth0` or `wlan0` with
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[systemd.link](https://www.man.page/5/systemd.link).
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### Ethernet
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This makes my ethernet interface be called **eth0** again.
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Create `/usr/lib/systemd/network/80-ether.link` with this content:
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~~~systemd
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[Match]
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Type=ether
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[Link]
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NamePolicy=keep kernel
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~~~
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Reboot.
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### Wireless
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This makes my wireless interface be called **wlan0** again.
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Create `/usr/lib/systemd/network/80-wlan.link` with this content:
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~~~systemd
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[Match]
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Type=wlan
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[Link]
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NamePolicy=keep kernel
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~~~
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Reboot.
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## Setup WiFi networks
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### Using **iwctl**
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~~~console
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$ iwctl device list
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$ iwctl station wlan0 scan
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$ iwctl station wlan0 get-networks
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$ iwctl station wlan0 connect {ssid}
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~~~
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### Using **nmcli** (NetworkManager)
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~~~console
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$ nmcli device wifi list
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$ nmcli device wifi rescan
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$ nmcli device wifi connect {ssid} --ask
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$ nmcli device wifi show-password
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~~~
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Last command shows the connected SSID and a QR-code within the terminal.
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## Using NetworkManager
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We create some files in `/etc/NetworkManager/conf.d`:
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## Using `iwd` as the WiFi backend
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`wifi_backend.conf`:
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~~~ini
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[device]
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wifi.backend=iwd
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~~~
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## Using `dhcpcd` as DHCP client
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`dhcp-client.conf`:
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~~~ini
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[main]
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dhcp=dhcpcd
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~~~
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## Do not manage one specific USB dongle
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`99-unmanaged-devices.conf`:
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~~~ini
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[keyfile]
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unmanaged-devices=mac:xx:xx:xx:xx:xx:xx
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~~~
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## Prefer local DNS instead of systemd-resolved defaults
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<https://unix.stackexchange.com/a/442599>
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## CPU frequency scaling
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<https://wiki.archlinux.org/title/CPU_frequency_scaling>
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## YubiKeys
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<https://wiki.archlinux.org/title/YubiKey>
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## LunarVim custom key mappings
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I know, this is an Arch Linux post but hey, I don't care.
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<https://github.com/LunarVim/LunarVim/issues/2602>
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## Mounting nfs shares with systemd
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<https://wiki.archlinux.org/title/NFS#Mount_using_/etc/fstab_with_systemd>
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### Arch Linux ARM installation on a Raspberry Pi 2
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The wiki page is for Raspberry Pi 4.
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<https://archlinuxarm.org/platforms/armv8/broadcom/raspberry-pi-4>
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## Create a 32-bit Wine prefix
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I create my wine prefixes usually like this:
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~~~console
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$ export WINEPREFIX=/home/dominic/.wine-winlink
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$ export WINEARCH=win32
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$ wine wineboot
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~~~
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