Shell Programming and Scripting

#!/bin/bash

wget -O tmp.tmp "YouTube - Pretty Woman- Vivian's Goes Shopping!"
temp=`grep 'one&video_id=' tmp.tmp | sed "s/.*one&video_id=\(.*\)'\;.*/\1/"`
temp="http://www.youtube.com/get_video?video_id=$temp"
temp=`echo $temp|sed -n "s/!/\\!/p"`
echo " -O $filename  \"$temp\""

--02:19:32--  YouTube - Pretty Woman- Vivian's Goes Shopping!
           => `tmp.tmp'
Resolving YouTube - Broadcast Yourself.... 208.65.153.238
Connecting to www.youtube.com|208.65.153.238|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 96,276 (94K) [text/html]
100%[=================================================================================================================>] 96,276       308.44K/s
02:19:33 (307.59 KB/s) - `tmp.tmp' saved [96276/96276]
 -O   " Woman- Vivian\'s Goes Shopping!"

sed -n 's/!/\\!/p'

sed -n "s/!/\\!/p"

sed -n s/'!'/'\\''!'/p

#!/bin/bash

errored() {
  echo "Usage:   `basename $0` [-f savefile] URL"
  echo "Example: `basename $0` -f Rick http://www.youtube.com/watch?v=oHg5SJYRHA0"
  echo "         Saves video with id oHg5SJYRHA0 to Rick.flv in your current directory"
  echo
  exit 65
}

if [ $# -ne 3 ]; then errored; fi

while getopts ':f:' Option
do
 case $Option in
  f ) fn=$OPTARG;;
  * ) errored;;
 esac
done

shift $(($OPTIND -1))

if [ -z $1 ]; then errored; fi
if [ -z $fn ]; then fn=$1; fi

vidid=$1
filename=$fn".flv"
echo -e "\nFilename $filename is now set\n"
temp=$(wget -qO - $vidid|grep '&video_id='|head -n 1|sed -e 's/.*video_id=//' -e 's/'\;'/''/')
echo -e "Searching $vidid for video location\c"

for (( i = 0 ; i <= 3; i++ ))
do
 echo -e ".\c"
 sleep 1
done

echo -e "\n\nHidden URL found: $temp\n"
sleep 1
temp=$(echo "http://www.youtube.com/get_video?video_id=$temp")

echo -e "Retrieving video \"$temp\"\n"

wget -O $filename "$temp"