判断当前用户是否为root管理员,如果是,则执行tar对/etc/目录执行备份.
#!/bin/bash
# IF current user is root then backup the /etc
if [ "$(id -u)" -eq 0 ];then
tar -czf /root/etc.tar.gz /etc &>/dev/null
else
echo 'Please switch user on root.'
exit 9
fi要求用户输入密码,判断密码是否正确.
#!/bin/bash
# Read password and test.
read -p "Enter a password:" password
if [ "$password" == "pass" ];then
echo "OK."
else
echo "Your password is Wrong."
exit 9
fi九九乘法表
#!/bin/bash
# 九九乘法表
for ((i=1;i<=9;i++))
do
for ((j=1;j<=i;j++))
do
echo -n "$j*$i=$[$i*$j] "
#printf "%-8s" $j*$i=$(($i*$j))
done
echo
done批量发送邮件
#!/bin/bash
#批量发送邮件
DOMAIN=sharelinux.com
for MAIL_U in tom allen whistle
do
mail -s "Log" $MAIL_U@${DOMAIN} </var/log/message
done打印网卡配置文件信息
#!/bin/bash
#Read /etc/sysconfig/network-scripts/ifcfg-eth0 and print out.
LINE=/etc/sysconfig/network-scripts/ifcfg-eth0
while read -r line
do
echo $line
done < $LINE备份MySQL数据库
#!/bin/bash
# This scripts is backup mysql database.
DATE=$(date +%Y-%m-%d)
DES=/usr/local/src/DB_MySQL
MYSQL_U="root" #mysql用户名
MYSQL_P="" #mysql密码,需要修改密码
MYSQL_H="127.0.0.1" #mysql服务器IP
if [ ! -d $DES ];then
mkdir -p "$DES"
fi
#获取数据库名称列表
DBS=$(mysql -u${MYSQL_U} -h${MYSQL_H} -Bse 'show databases')
#通过循环执行备份所有的MySQL数据库
for database in $DBS
do
if [ ! "${database}" == "information_schema" ];then
mysqldump -u$MYSQL_U -h$MYSQL_H ${database} |bzip2> "${DES}/${database}_${DATE}_mysql.gz"
#mysqldump -u$MYSQL_U -P$MYSQL_P -h$MYSQL_H $database|bzip2> "${DES}/${database}_${DATE}_mysql.gz"
md5sum ${DES}/${database}_${DATE}_mysql.gz>>${DES}/ReadMe.txt
else
:
fi
done
linux shell 实用小实例
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