How to expand relative paths in shell script

Question

I am writing a script to set environment variables on linux 2.6 using bash. So the script contains commands like:

export SRC_DIR=..
export LIBPATH=${SRC_DIR}/lib         


        

Answer 1

For keeping error code:

function getPwd() {
    $(cd $1; [[ $? -ne 0 ]] && exit 1 || echo echo $PWD;)
    return $?
}