从Slideshare.net 下载Slide的方法:

<Show Id="98359"> 
<Slide Src="https://s3.amazonaws.com:443/slideshare/zara2820-slide-1.swf"/> 
<Slide Src="https://s3.amazonaws.com:443/slideshare/zara2820-slide-2.swf"/> 
<Slide Src="https://s3.amazonaws.com:443/slideshare/zara2820-slide-3.swf"/> 
… 
<Slide Src="https://s3.amazonaws.com:443/slideshare/zara2820-slide-23.swf"/> 
<Slide Src="https://s3.amazonaws.com:443/slideshare/zara2820-slide-24.swf"/> 
</Show>

    if [[ "$DOCID" =~ "([a-z0-9-]+)$"  ]]
    then
        DOCID=${BASH_REMATCH[0]}
    else
        echo $DOCID
        exit 1
    fi

#!/bin/bash

# Author: Andrea Lazzarotto 
# http://andrealazzarotto.com 
# andrea.lazzarotto@gmail.com 
# Slideshare Downloader

# This script takes a slideshare presentation URL as an argument and 
# carves all the slides in flash format, then they are converted to 
# and finally merged as a PDF 
# License:

# Copyright 2010-2011 Andrea Lazzarotto 
# This script is licensed under the Gnu General Public License v3.0. 
# You can obtain a copy of this license here: http://www.gnu.org/licenses/gpl.html
# Usage:

# slideshare-downloader.sh URL [SIZE] 
#———————————————–

# Modify 7/08/2011 by giudinvx 
# Email  giudinvx[at]gmail[dot]com 
#———————————————– 
validate_input() { 
    # Performs a very basic check to see if the url is in the correct form 
    URL=`echo "$1" | cut -d "#" -f 1 | cut -d "/" -f 1-5` 
    DOMAIN=`echo "$URL" | cut -d "/" -f 3` 
    CORRECT=’www.slideshare.net’ 
    if [[ "$DOMAIN" != "$CORRECT" ]]; 
        then 
            echo "Provided URL is not valid." 
            exit 1 
    fi 
    if echo -n "$2" | grep "^[0-9]*$">/dev/null 
        then SIZE=$2 
        else 
            SIZE=2000 
            echo "Size not defined or invalid… defaulting to 2000." 
    fi 
} 
check_dependencies() {

    # Verifies if all binaries are present 
    DEP="wget sed seq  convert" 
    ERROR="0" 
    for i in $DEP; do 
        WHICH="`which $i`" 
        if [[ "x$WHICH" == "x" ]]; 
            then 
                echo "Error: $i not found." 
                ERROR="1" 
        fi 
    done 
    if [ "$ERROR" -eq "1" ]; 
        then 
            echo "You need to install some packages." 
            echo "Remember: this script requires Imagemagick and Swfdec." 
            exit 1 
    fi 
} 
build_params() {

    # Gathers required information 
    DOCSHORT=`echo "$1" | cut -d "/" -f 5` 
    echo "Download of $DOCSHORT started." 
    echo "Fetching information…" 
    INFOPAGE=`wget -q -O – "$1"` 
    DOCID=`echo "$INFOPAGE" | grep "doc=" | cut -d "=" -f 3 | cut -d "&" -f 1` 
    if [[ "$DOCID" =~ "([a-z0-9-]+)$" ]] 
    then 
        DOCID=${BASH_REMATCH[0]} 
    else 
        echo $DOCID 
        exit 1 
    fi 
    SLIDES=`echo "$INFOPAGE" | grep "totalSlides" | head -n 1 | sed -s "s/.*totalSlides//g" | cut -d ":" -f 2 | cut -d "," -f 1` 
    echo "Slides: $SLIDES" 
    echo "Size: $SIZE" 
} 
create_env() {

    # Finds a suitable name for the destination directory and creates it 
    DIR=$DOCSHORT 
    if [ -e "$DIR" ]; 
        then 
            I="-1" 
            OLD=$DIR 
            while [ -e "$DIR" ] 
            do 
                I=$(( $I + 1 )) 
                DIR="$OLD.$I" 
            done 
    fi 
    mkdir "$DIR" 
} 
fetch_slides() {

    for i in $( seq 1 $SLIDES ); do 
        echo "Downloading slide $i" 
        wget "http://cdn.slidesharecdn.com/`echo $DOCID`-slide-`echo $i`.swf" -q -O "$DIR/slide-`echo $i`.swf" 
    done 
    echo "All slides downloaded." 
} 
convert_slides() {

    for i in $( seq 1 $SLIDES ); do 
        echo "Converting slide $i" 
#        swfdec-thumbnailer -s $SIZE $DIR/slide-$i.swf $DIR/slide-$i.png 2>/dev/null 
        swfrender $DIR/slide-$i.swf -o $DIR/$i.png 2>/dev/null 
    done

    echo "All slides converted." 
} 
build_pdf() {

    cd $DIR 
    IMAGES=`ls *.png | sort -k1.3 ` 
    echo "Generating PDF…" 
    convert $IMAGES +adjoin %d.pdf 
    PDFS=`ls *.pdf | sort -k1.3 ` 
    pdftk $PDFS cat output $DOCSHORT.pdf 
    cd .. 
    echo "The PDF has been generated." 
    echo "Find your presentation in: \"`pwd`/$DIR/$DOCSHORT.pdf\"" 
} 
clean() {

    rm -rf $DIR/*.swf 
    rm -rf $DIR/*.png 
} 
validate_input $1 $2

check_dependencies 
build_params $URL 
create_env 
fetch_slides 
convert_slides 
build_pdf 
clean