oh-my-zsh/lib/directories.zsh

# Changing/making/removing directory
setopt auto_name_dirs
setopt auto_pushd
setopt pushd_ignore_dups
setopt pushdminus

alias ..='cd ..'
alias cd..='cd ..'
alias cd...='cd ../..'
alias cd....='cd ../../..'
alias cd.....='cd ../../../..'
alias cd/='cd /'

alias 1='cd -'
alias 2='cd -2'
alias 3='cd -3'
alias 4='cd -4'
alias 5='cd -5'
alias 6='cd -6'
alias 7='cd -7'
alias 8='cd -8'
alias 9='cd -9'

cd () {
  if   [[ "x$*" == "x..." ]]; then
    cd ../..
  elif [[ "x$*" == "x...." ]]; then
    cd ../../..
  elif [[ "x$*" == "x....." ]]; then
    cd ../../..
  elif [[ "x$*" == "x......" ]]; then
    cd ../../../..
  else
    builtin cd "$@"
  fi
}

alias md='mkdir -p'
alias rd=rmdir
alias d='dirs -v | head -10'

# mkdir & cd to it
function mcd() { 
  mkdir -p "$1" && cd "$1"; 
}