how I manage my paths

bashrc_functions.sh

pathadd() {
  if [ -d "$1" ] && [[ ":$PATH:" != *":$1:"* ]]; then
    PATH="${PATH:+"$PATH:"}$1"
  fi
}

pathoverride() {
  if [ -d "$1" ] && [[ ":$PATH:" != *":$1:"* ]]; then
    PATH="$1${PATH:+":$PATH"}"
  fi
}

# remote to ubuntu
function rpwd {
  local name=`pwd`
  [[ "$name" =~ ^"$HOME"(/|$) ]] && name="~${name#$HOME}"
  echo $name
}


# example use
# to change dir from mac /Users/lkyrala to /home/lkyrala automatically using the above rpwd.
alias ss='ssh lkyrala@ubuntu "cd `rpwd`; /bin/bash -i"'

# mac centric (acts like ubuntu with a twist):
# on prompt, only show the current directory, but in the window title
# show the entire path. prepended by user@machinename
PS1="\u@\h:../\W$ "
export PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}: ${PWD}\007"'


pathoverride $HOME/bin

export NODE_HOME=/local/node
pathadd $NODE_HOME/bin