my bashrc, used for setting up common paths and preferences I have

.bash_profile

# /etc/skel/.bash_profile

# This file is sourced by bash for login shells.  The following line
# runs your .bashrc and is recommended by the bash info pages.
[[ -f ~/.bashrc ]] && . ~/.bashrc

.bashrc

# /etc/skel/.bashrc

if [ -f /etc/bashrc ]; then
	. /etc/bashrc
fi

export EDITOR=nano

# The order needs to be (right-to-left):
# 1. MacPorts
# 2. Everything but MacPorts and ccache
# 3. ccache
for a in '' /usr /usr/local /Developer/usr /opt/local $(find /opt/ -maxdepth 1 2> /dev/null | sed 's/\/\//\//g' | grep -v local$) /opt/intel/cc/* /opt/intel/cce/* /opt/intel/Compiler/*/* /usr/local/intel/cc $HOME; do
	FULLPATH=$a
	if [ -x $FULLPATH ]; then
		if [ -x $FULLPATH/bin ]; then
			export PATH="$FULLPATH/bin:$PATH"
		fi
		if [ -x $FULLPATH/sbin ]; then
			export PATH="$FULLPATH/sbin:$PATH"
		fi
		if [ -x $FULLPATH/games ]; then
			export PATH="$FULLPATH/games:$PATH"
		fi
		if [ -x $FULLPATH/share/applications ]; then
			export XDG_DATA_DIRS="$FULLPATH/share:$XDG_DATA_DIRS"
		fi
		if [ -x $FULLPATH/share/aclocal ]; then
			export ACLOCAL_FLAGS="-I $FULLPATH/share/aclocal $ACLOCAL_FLAGS"
		fi
		if [ -x $FULLPATH/man ]; then
			export MANPATH="$FULLPATH/man:$MANPATH"
		fi
		if [ -x $FULLPATH/share/man ]; then
			export MANPATH="$FULLPATH/share/man:$MANPATH"
		fi
		if [ -x $FULLPATH/lib/pkgconfig ]; then
			export PKG_CONFIG_PATH="$FULLPATH/lib/pkgconfig/:$PKG_CONFIG_PATH"
		fi
		if [ -x $FULLPATH/lib/python2.5/site-packages ]; then
			export PYTHONPATH="$FULLPATH/lib/python2.5/site-packages/:$PYTHONPATH"
		fi
		if [ -x $FULLPATH/lib/python2.6/site-packages ]; then
			export PYTHONPATH="$FULLPATH/lib/python2.6/site-packages/:$PYTHONPATH"
		fi
	fi
done

# Linux
if [ -x /usr/lib/ccache ]; then
	export PATH="/usr/lib/ccache/bin:/usr/lib/ccache:$PATH"
fi

# Mac OS X
if [ -x /opt/local/libexec/ccache ]; then
	export PATH="/opt/local/libexec/ccache:$PATH"
fi

# FreeBSD
if [ -x /usr/local/libexec/ccache ]; then
	export PATH="/usr/local/libexec/ccache:$PATH"
fi

# Test for an interactive shell.  There is no need to set anything
# past this point for scp and rcp, and it's important to refrain from
# outputting anything in those cases.
if [[ $- != *i* ]] ; then
	# Shell is non-interactive.  Be done now!
	return
fi


# If keychain is installed, we can use this to store
# SSH keys in the SSH agent.
if [ "$(which keychain 2> /dev/null)" != "" ]; then
	keychain -q -Q "$HOME"/.ssh/*.ssh
	source "$HOME/.keychain/$HOSTNAME-sh"
fi


# Detect the OS for later platform-specific needs.
echo -n "Detecting operating system... "
OSNAME="$(uname -s)"
echo "$OSNAME"


# Check how the colors are set for the 'ls' command
echo -n "Checking 'ls' command type... "
ls --help &> /dev/null
if [ $? -ne 0 ]; then
	echo "BSD"
	export CLICOLOR=1
	export LSCOLORS=ExFxCxDxCxegedabagacad
else
	echo "GNU"
	alias ls="ls --color=auto"
fi


# On some distributions of Linux, it tries to
# use the DGA mouse driver, which breaks things
# terribly.
echo -n "Checking if mouse hack is needed... "
if [ "$OSNAME" == "Linux" ]; then
	echo "Yes"
	export SDL_VIDEO_X11_DGAMOUSE=0
else
	echo "No"
fi

# If we're on Linux, we want to ensure we use
# the ALSA sound driver since it is far better
# than other options.
echo -n "Checking for SDL audio driver... "
if [ "$OSNAME" == "Linux" ]; then
	echo "ALSA"
	export SDL_AUDIODRIVER="alsa"
else
	echo "Default"
fi