Shell code which provides a rudimentary project management command ('proj'). Set PROJ_ROOT to your projects parent directory and, assuming this file has been sourced, type 'proj' to get going.

proj.sh

# Project management (proj command)
export PROJ_ROOT=$HOME/projects
export PROJ_CONF=.proj.conf
_proj_complete ()
{ 
    local suggest=$(compgen -d $PROJ_ROOT/${COMP_WORDS[COMP_CWORD]} | awk -F "/" '{print $NF}')
    if [[ $(echo $suggest | wc -w | grep -o '[0-9]') == 1 && -d $PROJ_ROOT/$suggest ]]; then 
        COMPREPLY=$suggest
    else 
        unset COMPREPLY
    fi
}
proj ()
{ 
    # If a project ID is specified as an argument
    if [[ "$1" != "" && -d "$PROJ_ROOT/$1" ]]; then 
        export PROJ_HOME=$PROJ_ROOT/$1
        cd $PROJ_HOME

        # Get config options
        local name=""
        local run=""
        if [[ -f $PROJ_HOME/$PROJ_CONF ]]; then
            name=$(grep '^name=' $PROJ_HOME/$PROJ_CONF | cut -d '=' -f2- | head -1) 
            run=$(grep '^run=' $PROJ_HOME/$PROJ_CONF | cut -d '=' -f2-)
        fi

        # Apply default project name
        if [[ $name == "" ]]; then
            name=$1
        fi

        # Print project name and change terminal title
        echo "Project: $name" 

        # Run commands from config
        if [[ $run != "" ]]; then
            eval "$run"
        fi

    # If 'proj' is typed on its own
    else 
        echo
        echo "Current Projects:"

        # For each project
        for proj in $(ls -d $PROJ_ROOT/*/ | awk -F "/" '{print $(NF-1)}')
        do
            local name=""
            
            # If the config has a name then print it too
            if [[ -f $PROJ_ROOT/$proj/$PROJ_CONF ]]; then
                echo -n " - $proj"
                name=$(grep '^name=' $PROJ_ROOT/$proj/$PROJ_CONF | cut -d '=' -f2- | head -1)
                if [[ $name != "" ]]; then
                    echo " ($name)"
                fi

            # Otherwise just print the ID
            else
                echo " - $proj"
            fi
        done

        echo
        echo "\$PROJ_ROOT=$PROJ_ROOT"
        echo "\$PROJ_CONF=$PROJ_CONF"
        echo
    fi
}
complete -F _proj_complete proj