Linux
Obsah
První nastavení serveru
Základní balíčky
sudo apt update sudo apt install htop ssh sudo wget curl git net-tools psmisc
Vypnutí IPv6
Editace systémému pro vypnutí IPv6
sudo nano /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1
Vypnutí IPv6 pro ssh
sudo nano /etc/ssh/sshd_config
AddressFamily inet
Vypnutí IPv6 pro ufw
sudo nano /etc/default/ufw
IPV6=no
- https://www.techrepublic.com/article/how-to-disable-ipv6-on-linux/
- https://superuser.com/questions/326798/unable-to-close-sshd-on-ipv6-tcp-port
- https://www.lightnetics.com/topic/18604/how-do-i-enable-or-disable-ipv6-on-ubuntu-ufw-netfilter-firewall
Firewall & antivirus
sudo apt update sudo apt install clamav clamav-daemon ufw
Povolení SSH portu pro ufw
sudo ufw allow ssh sudo ufw enable
Zapnutí clamav-deamon
sudo systemctl enable clamav-daemon sudo systemctl start clamav-daemon
Zapnutí clamav-freshclam
sudo systemctl enable clamav-freshclam.service sudo systemctl start clamav-freshclam.service
Balíčky pro usnadnění práce
sudo apt update sudo apt install fzf ncdu dos2unix iftop
- fzf - Fuzzy finder better find
- ncdu - NCurses disk usage better du
- dos2unix - Smaže divný ^M ze souboru
- ll - Je to ls -l, musí se vytvořit alias
Swap
Vypnutí swap
Identifikace swap oddílu
cat /proc/swaps
Vypnutí swap
sudo swapoff -a
Odkaz na smazání swap oddílu
sudo nano /etc/fstab
Zapnutí swap
Zapnutí swap
sudo swapon -a
Guest tool pro Xen server
Nainstalování xen guest tool pro linux systém
curl -sfL https://github.com/clazzor/Xen-guest-autoinstall/releases/download/latest/autoinstall.sh | bash -
Instalace pip3
sudo apt update sudo apt install python3-pip
PS - Process Status
Process state codes
D uninterruptible sleep (usually IO)
I Idle kernel thread
R running or runnable (on run queue)
S interruptible sleep (waiting for an event to complete)
T stopped by job control signal
t stopped by debugger during the tracing
W paging (not valid since the 2.6.xx kernel)
X dead (should never be seen)
Z defunct ("zombie") process, terminated but not reaped by its parent
Věci navíc ke kódům
< high-priority (not nice to other users) N low-priority (nice to other users) L has pages locked into memory (for real-time and custom IO) s is a session leader l is multi-threaded (using CLONE_THREAD, like NPTL pthreads do) + is in the foreground process group
TUI & CLI
ZSH
Instalace
sudo apt update sudo apt install zsh
Pro přenastavení BASH na ZSH pro účet
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
Pluginy a vzhled
Stáhnutí
Stáhnutí theme a plugins
git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/themes/powerlevel10k git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting
Konfigurace
Propojení theme a plugins v configu .zshrc
ZSH_THEME="powerlevel10k/powerlevel10k" plugins=(git nomad zsh-autosuggestions zsh-syntax-highlighting)
Problém s mc
MC blbné s zsh kvůli novém shellu, načítá se dlouho, tohle jde vyřešit aliasem v .zshrc Další možnost je použít NNN
- viz: https://graffino.com/til/ZLcOA4Zcaq-fix-slow-loading-or-freezing-midnight-commander-mc-with-zsh
alias mc="mc --nosubshell"
NeoVim/NvChad
Instalace
Stáhnutí a nainstalování NeoVimu do /usr/bin
sudo curl -Lo /tmp/nvim-linux64.tar.gz https://github.com/neovim/neovim/releases/latest/download/nvim-linux64.tar.gz sudo tar -C /opt -xzf /tmp/nvim-linux64.tar.gz sudo rm /tmp/nvim-linux64.tar.gz sudo ln -s /opt/nvim-linux64/bin/nvim /usr/bin/nvim
Nainstalování balíčku pro kompilaci programovací jazyků, potřebuje NvChad
sudo apt update -y sudo apt install build-essential -y
Nainstalovíní pluginu NvChad
git clone https://github.com/NvChad/NvChad ~/.config/nvim --depth 1 && nvim
Poté je potřeba doinstalovat zbytek pluginu pomocí příkazu v NeoVimu
ESC -> SHIFT+: -> MasonInstallAll
Dále je potřeba pro zobrazení ikon doinstalovat nerd font https://www.nerdfonts.com/font-downloads doporučeno CaskaydiaCove Nerd Font A také nastavit správně zobrazení barev, více zde https://gist.github.com/andersevenrud/015e61af2fd264371032763d4ed965b6
- https://github.com/neovim/neovim/blob/master/INSTALL.md
- https://nvchad.com/docs/features
- https://docs.rockylinux.org/books/nvchad/install_nvchad/
NNN
Instalace
sudo apt update sudo apt install nnn
Pro plugin preview-tui potřebujeme tmux
sudo apt install tmux
Pro aktualizaci/stažení pluginu:
sh -c "$(curl -Ls https://raw.githubusercontent.com/jarun/nnn/master/plugins/getplugs)"
- https://github.com/jarun/nnn
- https://www.youtube.com/watch?v=-knZwdd1ScU&t=353s
- https://github.com/jarun/nnn/tree/master/plugins#installation
- https://github.com/jarun/nnn/wiki/Usage#configuration
- https://github.com/jarun/nnn/wiki/Troubleshooting#tmux-configuration
- https://github.com/jarun/nnn/wiki/Basic-use-cases#configure-cd-on-quit
- https://github.com/jarun/nnn/wiki/Live-previews
- https://github.com/luukvbaal/nnn.nvim
