gistfile1.txt

#!/bin/bash
exec 3<> /dev/tcp/${1:-localhost}/4949

 printf "list" >&3
 printf "\r\n" >&3

            while read -ra line <&3
                do for word in "${line[@]}" 
                        do printf 'fetch %s\n' "$word" 
                                    while read -r fline <&3 
                                                    do [[ $fline = . ]] && break 
                                                                        echo "got $fline"; 
                                                                    done
                                                                done
                                                            done