一道企业shell编程实战题 http://oldboy.blog.51cto.com/2561410/1657042
本脚本对http://edu.51cto.com/的视频具有通用性，暂未发现bug，如有发现，请看官自行解决。
先上脚本
[root@mysql scripts]# cat html_to_table.sh
#!/bin/bash
# oldboy linux training
# 2015-06-01
# Happy Children's Day
# 说明：本脚本来自老男孩linux21期学员张耀开发！
EduFile=/tmp/edu.html
EduFile2=/tmp/edu2.html
Url="$*"
# Check for given parameters
[ $# -eq 0 ] && {
echo "USAGE: /bin/sh $0 http://...."
exit 1
}
# Judge url is ok?
curl -I $Url &>/dev/null
[ $? -ne 0 ] &&{
echo "Bad url,Please check it"
exit 1
}
# Defined get pagenum and CourseId Functions
function getnum(){
curl -s $Url>$EduFile
grep '"pagesGoEnd"' $EduFile &>/dev/null
if [ $? -eq 0 ]
then
num=`sed -rn 's#.*page=([0-9].*)" class="pagesGoEnd".*$#\1#gp' $EduFile`
else
num=`sed -rn 's|.*page=([0-9].*)#" class="pagesNum".*$|\1|gp' $EduFile`
fi
pagenum=${num:-1}
CourseId=`echo $Url|awk -F "[-.]" '{print $4}'`
}
# Defined curl html Functions
function Curl(){
getnum
for i in `seq $pagenum`
do
curl "http://edu.51cto.com/index.php?do=course&m=lessions&course_id=$CourseId&page=$i" 1>>$EduFile 2>/dev/null
done
}
# Defined Create table Functions
function table(){
sum=""
index=1
sed -rn '/do=lesson/ s#<.*(#\1http://edu.51cto.com\2#gp' $EduFile > $EduFile2
while read line
do
sum=$sum"$index$line"
((index++))
done <$EduFile2
}
# Defined Create html Functions
function html(){
cat >/tmp/oldboy.html<<-END
test
$sum