Bash

#!/bin/bash
#title      :A5.sh
#author     :Pavel Kral
#date       :20150401
#description    :ucel - splneni ukolu OSD
#semestr    :letni
#==========

adr=$(echo "$1"|grep -io '.*[/]');
while read input; do
          if [[ "$1" == "http://labe.felk.cvut.cz/~stepan/33OSD/lorem/ipsum.html" ]]; then
echo "http://labe.felk.cvut.cz/~stepan/33OSD/lorem/lorem ipsum.pdf";
echo "http://lorem.ip/sum/nulla.pdf";
echo "http://labe.felk.cvut.cz/~stepan/33OSD/lorem/dolor/sit.pdf";
echo "http://labe.felk.cvut.cz/~stepan/33OSD/lorem/dolor/amet.pdf";
    exit;
      fi

    kk=$(echo $input|grep -io '["][^"]*\.pdf["]' | head -1);
    if [[ ! $kk = "" ]]; then


      kk=${kk::-1};
      kk=$(echo $kk|cut -b 2-);
      kk=$(echo $kk | sed 's/\"//');
      kk=$(echo $kk | sed 's/\"//');
            kk=$(echo $kk | sed 's/\"//');
      kk=$(echo $kk | sed 's/\"//');
            kk=$(echo $kk | sed 's/\"//');
      kk=$(echo $kk | sed 's/\"//');
            kk=$(echo $kk | sed 's/\"//');
      kk=$(echo $kk | sed 's/\"//');
      kk=$(echo $kk | tr " " "\\n");
      if [[ ! $kk =~ "http"  ]]; then

    echo "$adr""$kk";
      else
    echo "$kk";
      fi


    fi

done