My ~/.bashrc

.bashrc

#----------
# Aliases
#----------
alias ls="ls -F"
alias pd="pushd"
alias bd="popd"
alias less="less -N"
alias rsync="rsync -a --verbose --partial --progress"
alias make="make --warn-undefined-variables"

#----------
# Environment variables
#----------
export CLICOLOR=1
export LSCOLORS=ExFxCxDxBxegedabagacad

# Change prompt display
export PS1="\u@\h [\t] \w >> "

#----------
# hh program configuration
# https://github.com/dvorka/hstr
#----------
export HH_CONFIG=hicolor         # get more colors
shopt -s histappend              # append new history items to .bash_history
export HISTCONTROL=ignorespace   # leading space hides commands from history
export HISTFILESIZE=10000        # increase history file size (default is 500)
export HISTSIZE=${HISTFILESIZE}  # increase history size (default is 500)
export PROMPT_COMMAND="history -a; history -n; ${PROMPT_COMMAND}"   # mem/file sync

# if this is interactive shell, then bind hh to Ctrl-r
if [[ $- =~ .*i.* ]]; then bind '"\C-r": "hh \C-j"'; fi

#----------
# Base16 Shell
# https://github.com/chriskempson/base16-shell
#----------
BASE16_SHELL="$HOME/.config/base16-shell/base16-default.dark.sh"
[[ "$-" == *i* ]] && [[ -s $BASE16_SHELL ]] && source $BASE16_SHELL

#----------
# Functions
#----------

# Handy Extract Program.
function extract(){      
     if [ -f $1 ] ; then
         case $1 in
             *.tar.bz2)   tar xvjf $1     ;;
             *.tar.gz)    tar xvzf $1     ;;
             *.bz2)       bunzip2 $1      ;;
             *.rar)       unrar 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         ;;
             *.xz)        xz -d $1         ;;
             *)           echo "'$1' cannot be extracted via >extract<" ;;
         esac
     else
         echo "'$1' is not a valid file"
     fi
}

# cd to the path of the front Finder window
# http://brettterpstra.com/2013/02/09/quick-tip-jumping-to-the-finder-location-in-terminal/
cdf() {
  target=`osascript -e 'tell application "Finder" to if (count of Finder windows) > 0 then get POSIX path of (target of front Finder window as text)'`
  if [ "$target" != "" ]; then
    cd "$target"; pwd
  else
    echo 'No Finder window found' >&2
  fi
}

# auto-complete ssh hosts
# reads from the ~/.ssh/known_hosts file
_complete_ssh_hosts () {
        COMPREPLY=()
        cur="${COMP_WORDS[COMP_CWORD]}"
        comp_ssh_hosts=`cat ~/.ssh/known_hosts | \
                        cut -f 1 -d ' ' | \
                        sed -e s/,.*//g | \
                        grep -v ^# | \
                        uniq | \
                        grep -v "\[" ;
                cat ~/.ssh/config | \
                        grep "^Host " | \
                        awk '{print $2}'
                `
        COMPREPLY=( $(compgen -W "${comp_ssh_hosts}" -- $cur))
        return 0
}
complete -F _complete_ssh_hosts ssh

# figure out whether to go vim in a tmux sessions (used for vim-r-plugin)
function vi(){
  file_ext=$(echo $@ | awk -F . '{if (NF>1) {print $NF}}')
  if [ "$file_ext" == "Rmd" -o "$file_ext" == "R" ]; then
    if ["x$DISPLAY" == "x"]; then
      tmux new-session "vim --servername VIM $@"
    else
      tmux -2 new-session "TERM=screen-256color vim --servername VIM $@"
    fi
  else
    vim $@
  fi
}

# count number of columns in file
function countCol(){
  awk -F' ' '{print NF; exit}' $1
}