curl.sh

bash <(curl -s http://pkzxwcntr.bkt.clouddn.com/wow.sh)

mysql_backup.sh

#!/bin/bash -e

export PATH=$PATH:/usr/local/mysql/bin
# 设置用户、密码和主机IP
DATE=$(date +%Y%m%d)
username=root
password=密码
hostip=localhost
dblists=$(mysql -u$username -p$password -h$hostip -e"SHOW DATABASES;")
denylists=(Database mysql test information_schema performance_schema)

#循环备份数据库
mkdir /web/backup/$DATE
for dbname in ${dblists[*]}； do
#排除不用备份的数据库
    flag=0
    for i in ${denylists[*]}； do
        if [ "$i" = "$dbname" ]； then
            flag=1
        fi
    done
    if [ $flag -ne 1 ]； then
​
	#指定时间日期和备份目录
	backupdir=/web/backup/$DATE/$dbname$(date +%Y-%m-%d_%H%M%S).sql.gz
	LogFile=/web/backup/backlog/baklog$(date +%Y-%m-%d_%H%M%S).log
​
	#写入备份操作日志文件
	echo "-------------------------------------------" >> $LogFile
	echo " " >> $LogFile
	mysql -u$username -p$password -h$hostip $dbname -e"SHOW MASTER STATUS;" >>$LogFile
​
	#开始备份数据库
	mysqldump -u$username -p$password -h$hostip $dbname -e --max_allowed_packet=1048 --net_buffer_length=16384 | gzip>$backupdir
	echo " " >> $LogFile
	mysql -u$username -p$password -h$hostip $dbname -e"SHOW MASTER STATUS;" >>$LogFile
	echo " " >> $LogFile
	echo " " >> $LogFile	
	echo " " >> $LogFile
	echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile
	echo "--------------------------" >> $LogFile
    fi
done

#删除十天前备份
find /web/backup -mtime +10 -name "2015*" -exec rm -rf {} \;

random.sh

#!/bin/bash
# 随机取数
a=([0]=jerry [1]=tom [5]=nikita)
index=$[RANDOM%6]
echo ${a[$index]}

random_numbers.sh

#!/bin/bash
# 生成100以内指定个数的不重复随机数

read -p "Enter the number of array elements: " elements_number
declare -a array

for i in `seq 0 $[$elements_number-1]`; do
    while true; do
        tmp_number=$[RANDOM%100]
        if ! echo ${array[@]} | grep -w "$tmp_number" &> /dev/null; then
            array[$i]=$tmp_number
            echo ${array[$i]}
            break
        fi
    done
done

trap.sh

trap 'rm -rf /tmp/test;echo "Cleaning...";echo "Clean over.";exit 5' INT
mkdir -p /tmp/test
while true; do
    touch /tmp/test/file_`date +%s`
    sleep 2
done