For installation follow below commands.

git clone https://github.com/om-prabhat/zsh_tmux.git
cd zsh_tmux
chmod +x install.sh
./install.sh

This will install zsh oh_my_zsh and tmux and also fully configure it.

The alias you want to set can be done through ~/.alias file

Install JetBrainsMono Nerd Font before setting up alacritty.toml from here : https://github.com/ryanoasis/nerd-fonts/releases

AND alacritty setup is not included in install script do it manually

in place of cat use batcat sudo apt install bat -y

Fuzzy finder helpa

git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install

powerlevel10k

https://github.com/romkatv/powerlevel10k?tab=readme-ov-file#oh-my-zsh