.bashrc

    # mark/jump support + completion
    # un/mark name : bookmark a directory or remove one (unmark)
    # jump name : jump to directory
    # marks : show all bookmarks
    export MARKPATH=$HOME/.marks
    function jump {
        cd -P $MARKPATH/$1 2>/dev/null || echo "No such mark: $1"
    }
    function mark {
        mkdir -p $MARKPATH; ln -s $(pwd) $MARKPATH/$1
    }
    function unmark {
        rm -i $MARKPATH/$1
    }
    function marks {
        ls -l $MARKPATH | sed 's/  / /g' | cut -d' ' -f9- | sed 's/ -/\t-/g' && echo
    }
    _completemarks() {
      local curw=${COMP_WORDS[COMP_CWORD]}
      local wordlist=$(find $MARKPATH -type l -printf "%f\n")
      COMPREPLY=($(compgen -W '${wordlist[@]}' -- "$curw"))
      return 0
    }

    complete -F _completemarks jump unmark