.bashrc file with useful shortcuts. The file can update itself using `updaterc`. Also contains detection of platform it's running on

.bashrc

# if not running interactively, don't do anything
[ -z "$PS1" ] && return

# Detect platform
platform='unknown'
unamestr=`uname`
if [[ "$unamestr" == 'Linux' ]]; then
   platform='linux'
elif [[ "$unamestr" == 'FreeBSD' ]]; then
   platform='freebsd'
fi

# load global configuration
if [ -f /etc/bashrc ]; then
  source /etc/bashrc
fi

# Easy extract
extract () {
  if [ -f $1 ] ; then
    case $1 in
      *.tar.bz2)   tar xvjf $1    ;;
      *.tar.gz)    tar xvzf $1    ;;
      *.bz2)       bunzip2 $1     ;;
      *.rar)       rar x $1       ;;
      *.gz)        gunzip $1      ;;
      *.tar)       tar xvf $1     ;;
      *.tbz2)      tar xvjf $1    ;;
      *.tgz)       tar xvzf $1    ;;
      *.zip)       unzip $1       ;;
      *.Z)         uncompress $1  ;;
      *.7z)        7z x $1        ;;
      *)           echo "don't know how to extract '$1'..." ;;
    esac
  else
    echo "'$1' is not a valid file!"
  fi
}

# Creates directory then moves into it
function mkcdr {
  mkdir -p -v $1
  cd $1
}

# Creates an archive from given directory
mktar() { tar cvf  "${1%%/}.tar"     "${1%%/}/"; }
mktgz() { tar cvzf "${1%%/}.tar.gz"  "${1%%/}/"; }
mktbz() { tar cvjf "${1%%/}.tar.bz2" "${1%%/}/"; }

# Listing
if [[ $platform == 'linux' ]]; then
   alias ls='ls --color=auto'
elif [[ $platform == 'freebsd' ]]; then
   alias ls='ls -G'
fi

alias ll='ls -lA'
alias la='ls -A'
alias tree='tree -Cs'

# Files and directories
alias cp='cp -i'
alias mv='mv -i'
alias mkdir='mkdir -p -v'

# Navigation
alias back='cd $OLDPWD'
alias home='cd ~/'
alias ..="cd .."
alias ...="cd  ../.."
alias ....="cd ../../.."
alias .....="cd ../../../.."
alias ......="cd ../../../../.."

# Editor
alias nano='nano -W -m'
alias edit='nano'

# .bashrc
alias reloadrc='source ~/.bashrc'
alias updaterc='mv ~/.bashrc ~/.bashrc! -f; wget -P ~/ https://gist.github.com/JakubTesarek/8840983/raw/.bashrc --no-check-certificate; source ~/.bashrc'

# load user configuration
if [ -f ~/.bashrcu ]; then
  source ~/.bashrcu
fi

Nice, I will share some of my tips:

• Check https://github.com/clvv/fasd if you want to speed up directory navigation.
• Mac's uname returns Darwin. You can use cd - instead of cd $OLDPWD.
• May be it is enough to have one cd .. alias and chain them ..;..;...

Something I have learnt only recently (regrettably) - sharing prompt history among multiple terminals:

PROMPT_COMMAND="history -a; history -n"
shopt -s histappend

You may want to force editor to be used in more applications:

export EDITOR=nano
export VISUAL=$EDITOR

Well it should actually read vim and not nano ;-) There is even more fun hidden in .vimrc - https://github.com/brablc/dotvim . You are still young and can become vim hero (unlike me).