My personal favorite and minimal .zshrc for servers

.zshrc

# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org>

## Zsh modules
# Load and initialize the `colors' environment variable with ANSI colors
autoload -Uz colors && colors
# Load and initialize tab-completion
autoload -Uz compinit && compinit
setopt completealiases
zstyle ':completion:*' menu select
# Load the url-quote-magic module that automagically adds quotes when a
# URL is inserted as an argument
autoload -Uz url-quote-magic && zle -N self-insert url-quote-magic

## Zsh options
# Automatically push `cd' dirs to the stack`
setopt autopushd pushdminus pushdsilent pushdtohome
# Allow commands like `..' to act like `cd ..'
setopt autocd
# Enable variable substitution in PROMPT and RPROMPT
setopt prompt_subst

## Environment
# History options
export HISTFILE=~/.history HISTSIZE=2000 SAVEHIST=2000
# Set the left part of the prompt.
export PROMPT="%F{cyan}%n@%m%f %~ %# "
# Print a grey ¬ when trying to preserve a partial line
export PROMPT_EOL_MARK="%F{59}¬%f"
# Set the default browser
export BROWSER=chromium
# Set the default editor
export EDITOR=vim
# Print the wall-time for a process when it runs for a longer period of time
export REPORTTIME=4

# Initialize rbenv if it's installed locally
if [ -e ~/.rbenv/bin/rbenv ]; then
  export PATH="${HOME}/.rbenv/bin:${PATH}"

  eval "$(rbenv init -)"
fi

# Load directory colors for `ls'
[ -e ~/.dircolors ] && eval "$(dircolors)"

# Add ~/.bin to the PATH stack if the directory exists
[ -d ~/.bin ] && export PATH="${HOME}/.bin:${PATH}"

# Set The GOPATH if the ~/.go directory exists
[ -d ~/.go ] && export GOPATH="${HOME}/.go"

# Use GPG as a SSH agent
[ -e ~/.gnupg ] && export SSH_AUTH_SOCK="${HOME}/.gnupg/S.gpg-agent.ssh"

## Aliases
# Unix aliases
alias ls='ls --color=auto -F'
alias ll='ls -l'
alias grep='grep --color=auto'
alias gdb='gdb -q'
# Git aliases
alias gush='git push'
alias gushh='git push origin master'
alias gash='git stash'
alias gasha='git stash apply'
alias gush='git push'
alias gushh='git push origin master'
alias gul='git pull'
alias gull='git pull origin master'
alias ga='git commit --amend'

# Bind keys according to terminfo - zsh doesn't do this by itself
[[ -n "${terminfo[kbs]}" ]] && bindkey -M emacs "${terminfo[kbs]}" backward-delete-char
[[ -n "${terminfo[khome]}" ]] && bindkey -M emacs "${terminfo[khome]}" beginning-of-line
[[ -n "${terminfo[kend]}" ]] && bindkey -M emacs "${terminfo[kend]}" end-of-line
[[ -n "${terminfo[kich1]}" ]] && bindkey -M emacs "${terminfo[kich1]}" overwrite-mode
[[ -n "${terminfo[kdch1]}" ]] && bindkey -M emacs "${terminfo[kdch1]}" delete-char
[[ -n "${terminfo[kcuu1]}" ]] && bindkey -M emacs "${terminfo[kcuu1]}" up-line-or-history
[[ -n "${terminfo[kcud1]}" ]] && bindkey -M emacs "${terminfo[kcud1]}" down-line-or-history
[[ -n "${terminfo[kcub1]}" ]] && bindkey -M emacs "${terminfo[kcub1]}" backward-char
[[ -n "${terminfo[kcuf1]}" ]] && bindkey -M emacs "${terminfo[kcuf1]}" forward-char

# Run in emacs mode
bindkey -e

# Finally, make sure the terminal is in application mode, when zle is
# active. Only then are the values from $terminfo valid.
function zle-line-init() {
  echoti smkx
}

function zle-line-finish() {
  echoti rmkx
}

zle -N zle-line-init
zle -N zle-line-finish

## Miscellaneous functions

# Usage: `lvlc <stream url>`
function lvlc {
  livestreamer $* best
}

# Usage: `mkdiff <file1> <file2>`
function mkdiff {
  diff -udrP "$1" "$2" > diff.$(date "+%Y-%m-%d")."$1"
}

# Usage: `mkcd <path>`
function mkcd {
  mkdir -p "$*"
  cd "$*"
}

[ -e ~/.zshrc.local ] && source ~/.zshrc.local