Oh my zsh

Oh My Zsh (OMZ) is a powerful framework for managing the Zsh shell configuration. It provides themes, plugins, and extensive customization options.

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Installation

Prerequisites

• Install Zsh:

  sudo apt install zsh   # Debian-based
  sudo dnf install zsh   # Fedora-based
  sudo pacman -S zsh     # Arch-based

• Verify installation:

  zsh --version

Install Oh My Zsh

• Via curl:

  sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

• Via wget:

  sh -c "$(wget https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh -O -)"

• Switch to Zsh:

  chsh -s $(which zsh)

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Configuration

Changing Themes

• Themes are located in ~/.oh-my-zsh/themes/
• Set theme in ~/.zshrc:

  ZSH_THEME="agnoster"

• Apply changes:

  source ~/.zshrc

Popular Themes

• robbyrussell (default, minimal Git integration)
• agnoster (powerline style, needs Powerline fonts)
• powerlevel10k (highly customizable, fastest prompt)

Powerline Fonts (for some themes)

git clone https://github.com/powerline/fonts.git --depth=1
cd fonts && ./install.sh && cd .. && rm -rf fonts

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Plugins

Enabling Plugins

• Modify ~/.zshrc:

  plugins=(git zsh-autosuggestions zsh-syntax-highlighting)

• Apply changes:

  source ~/.zshrc

Popular Plugins

• git (Git shortcuts)
• zsh-autosuggestions (suggest commands as you type)
• zsh-syntax-highlighting (syntax colorization)
• docker (Docker command aliases)
• vi-mode (Vim-like editing in the shell)

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Customization

Aliases

Define in ~/.zshrc:

alias ll='ls -la'
alias gs='git status'

Functions

mkcd() {
    mkdir -p "$1" && cd "$1"
}

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Updating & Uninstalling

Update Oh My Zsh

omz update

Uninstall Oh My Zsh

uninstall_oh_my_zsh

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Troubleshooting

Theme Not Changing?

exec zsh

Plugin Not Working?

• Ensure it’s listed in plugins=()
• Run:

  source ~/.zshrc