# User-defined functions
  naughty_cat() {
      # Just say meow and do nothing. Fun stuff!
      echo "Meow! I do not feel like working!"
  }

# User-defined aliases
  alias la='ls -lAhFur --author --group-directories-first'
  alias ll='ls -lAhdur --author --group-directories-first */'
  alias l='ls -lAhFtur --author --group-directories-first'
  alias cls=" echo -en '\ec'"
  alias cp='cp -iv'
  alias mv='mv -iv'
  alias rm='rm -iv --one-file-system --preserve-root'
  alias edit='emacs'
  alias e=edit
  alias c=' vim -R'
  alias b=browse
  alias diff=colordiff
  alias make=colormake
  alias ssh='ssh -X'
  alias cat=" naughty_cat"
  alias clean=" rm -f *~ 2>/dev/null || rm -f .*~ 2>/dev/null"
  alias df='df -h'
  alias du='du -h'
  alias tree=" tree -a"
  alias history=" history"

# User-defined export variables.
  export VISUAL=emacs
  export EDITOR=emacs