a collection of notes for sysadmin and general linux tasks that i find myself having to look up over and over again.
sudo apt update sudo apt upgrade sudo apt dist-upgrade sudo apt autoremove sudo do-release-upgrade sudo reboot now
sometimes after that there are some random dpkg / apt errors:
sudo dpkg --configure -a sudo apt --fix-broken install
add desktop launcher
- example file in
[Desktop Entry] Type=Application Name=Wally Comment=USB Flasher for Ergodox EZ Version=3.0.23 Exec=/usr/local/bin/wally Icon=/opt/wally/appicon.png Terminal=False Categories=Firmware
sudo apt-get clean sudo apt-get autoremove --purge
These are some notes for myself when setting up arch.
before you can use the package manager
pacman you need to run:
This sets up your ability to set some keys and then use them to check the fingerprints on packages you’re going to install.
If you’re on a raspberry pi, you’ll need to add the keys for
archlinuxarm in particular:
pacman-key --populate archlinuxarm
Thereafter you can go about installing whatever you need.
If you need to remove all the keys you have added to start over, you can:
rm -rf /etc/pacman.d/gnupg
before running the init again.
In order to get make, and a bunch of basic tooling:
pacman -S base-devel
I always need to download some AUR packages. Usually we still need to download a client:
git clone https://aur.archlinux.org/yay.git cd yay makepkg -si
Sometimes my system76 laptop’s audio just stops working. This seems to fix it:
systemctl --user restart pulseaudio rm -r ~/.config/pulse pulseaudio -k
I can never remember this:
Ctrl + Shift + E + Space: then search via word tags
df -h du -h -d 1 . --exclude proc
journalctl --rotate journalctl --vacuum-size=100M journalctl --vacuum-time=10d
docker system prune -a docker volume prune -a
snap set system refresh.retain=2
sometimes you run out of memory on tiny machines. don’t forget to use swap!
sudo fallocate -l 1G /swapfile sudo chmod 600 /swapfile sudo mkswap /swapfile sudo swapon /swapfile sudo swapon --show sudo cp /etc/fstab /etc/fstab.bak echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab cat /proc/sys/vm/swappiness sudo sysctl vm.swappiness=10