Show username only without hostname in zsh agnoster theme

Agnoster theme is a pretty good theme for my zsh terminal. However, the hostname is too long nearly over a half of the screen. I have found a way to reduce the length and show username without hostname. it’s very easy, just to remove the @%m to in the theme file.

1. Open the theme file.

~/.oh-my-zsh/themes/agnoster.zsh-theme

2. Search prompt_context.

# Context: user@hostname (who am I and where am I)
prompt_context() {  
  if [[ "$USER" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then
    prompt_segment black default "%(!.%{%F{yellow}%}.)$USER@%m"
  fi
}

3. Remove @%m after $USER, then save it.

# Context: user@hostname (who am I and where am I)
prompt_context() {  
  if [[ "$USER" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then
    prompt_segment black default "%(!.%{%F{yellow}%}.)$USER"
  fi
}

And That’s it!