SHELL训练营--day22_shell练习51-55

#判断网站运行
#!/bin/bash
url="http://www.baidu.com/index.php"
mail_user=123123@qq.com

code=`curl -I $url 2>/tmp/curl.err|head -1|awk '{print $2}'`

if [ -z "$code" ]
then
python mail.py $mail_user "$url 访问异常" "`cat /tmp/curl.err`"
elif [ $code != "200" ]
then
curl -I $url &>/tmp/curl.log
python mail.py $mail_user "$url访问异常，状态码$code" "`cat /tmp/curl.log`"
fi

#小于5k文件打包
#!/bin/bash
t=`date +%F`

cd $HOME
tar czf $t.tar.gz `find ./ -type f -size -5k|xargs`

#监控22端口是否被封
#!/bin/bash
iptables -nvL INPUT --line-numbers |grep -w 'dpt:22' |awk '$4 ~/REJECT|DROP/ {print $1}' >/tmp/iptables.log
n=`wc -l /tmp/iptables.log`

if [ $n -gt 0 ]
then
for n in `tac /tmp/iptables.log`
do
iptables -D INPUT $n
done
fi

#分析日志
#!/bin/bash
export LANG=en
log="/usr/local/nginx/logs/access.log"
t=`date +%d/%b/%Y:1[01]:[0-5][0-9]:`

egrep "$t" $log| awk '{print $1}' |sort -n |uniq -c |sort -n |tail -1 |awk '{print $2}'

#打印数字
#!/bin/bash
read -p "Please input a number:" n
n1=`echo $n |sed 's/[0-9]//g'`
if [ -n "$n1" ]
then
echo "Please input a number."
exit
fi

for i in `seq 1 $n`
do
echo $i
done

read -p "If continue? y/n" c
case $c in
n|N)
exit
;;
y|Y)
read -p "Please input a number:" n2
n3=`echo $2 |sed 's/[0-9]//g'`
if [ -n "$n3" ]
then
echo "Please input a number."
exit
fi
if [ $n2 -le $n ]
then
echo "$n2 should grater than $n."
exit
fi

for i in `seq $[$n+1] $n2`
do
echo $i
done
;;
*)
echo "Please input a number."
;;
esac