Download Linux Voice magazines and optimize them for screens

get_linux_voice.sh

#!/bin/bash
# Download Linux Voice magazines and optimize them for screens
#  which makes them less than half in size
get_issue() {
  temp_file=Linux-Voice-Issue-0$1_.pdf
  final_file=Linux-Voice-Issue-0$1.pdf
  [ -e $final_file ] && return
  wget -qc --show-progress -O $temp_file \
    https://www.linuxvoice.com/issues/0$1/Linux-Voice-Issue-0$1.pdf &&
  ps2pdf -dSETTING=/ebook $temp_file $final_file &&
  rm -f $temp_file ||
  echo ERROR
}

if [ -z "$1" ]; then
  for i in {27..01}; do
    get_issue $i
  done
else
  get_issue $1