Command to download a series of urls with zero padding files…

for ((i=1;i<20;i++))
do wget "http://img55.onemanga.com/mangas/00000004/00000000/Naruto-Pilot-`printf "%02d" $i`.jpg"; done
done

This is how you zero pad a numerical variable in bash.

for ((x=1;x< =31;x+=1)); do echo `printf "%02d" $x`; done

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