Text Editor

nano

• every linux have nano, if not install yet (very rare), usually in distroless docker image

Install

sudo apt-get install nano

Command

• Create new file without touch

nano hehe.txt

• Create a file name hihi.txt with some text

echo "first line" > hihi.txt

• Append a text to end of file

# Redirection operator
echo "first line" >> hihi.txt

• Cut/Delete a line

Ctrl + K

• Copy, paste selected line

Ctrl + 6 #Mark set
Alt  + 6  #Copy selected
Ctrl + U #Paste

• Moving a line

Ctrl + K
Ctrl + U

vim, neovim, lazyVim

Install neovim aka nvim (https://neovim.io/doc/install/)

# Pre-built archives
# The Releases page provides pre-built binaries for Linux systems.

curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim-linux-x86_64.tar.gz
sudo rm -rf /opt/nvim-linux-x86_64
sudo tar -C /opt -xzf nvim-linux-x86_64.tar.gz

• Then add this to your shell config (~/.bashrc, ~/.zshrc, …):

export PATH="$PATH:/opt/nvim-linux-x86_64/bin"

• Install Lazyvim (https://www.lazyvim.org/installation)
• LazyVim require v10 above to install

• Bug:

Error detected while processing User Autocommands for "VeryLazy":
No C compiler found! "cc", "gcc", "clang", "cl", "zig" are not executable.

sudo apt install build-essential

• Vim has 3 modes: Normal, Insert, Visual

• Default Nvim/Vim start with Normal Mode, we switch to Insert Mode by type any text on keyboard one time, vice versa we need to type Esc keyboard

• Visual Mode is used to select text, we can switch to Visual Mode by type v on keyboard

• https://www.tutorialspoint.com/vim/vim_navigating.htm

Normal Mode

1. Basic Navigation

• h and l (Move the current cursor to left or right one position)
• j and k (Move the current cursor to down or up one position)

2. Move line

• Alt + j (Move the current line down)

• Alt + k (Move the current line up)

• dd: delete one line

• u: undo ~ Ctrl + Z

• :bprev

• :bnext

Kate