作者：朱明宇
名称：问候
作用：问候当前的登录用户并且显示时间
1. 给此脚本添加执行权限
2. 执行此脚本
3. 可以设置开机运行此脚本
#!/bin/bash
time=`date +%H`
if [ $time -lt 10 ];then
z="早上好,$USER"
elif [ $time -ge 10 -a $time -lt 13 ];then
z="中午好,$USER"
elif [ $time -ge 13 -a $time -lt 18 ];then
z="下午好,$USER"
else
z="晚上好,$USER"
fi
echo -e "\033[34m$z\033[0m"
echo -e "当前的时间是`date +%Y-%m-%d-%H-%M-%S`"作者：朱明宇
名称：病毒（无法被杀死）
作用：产生一个永远运行不会被杀死的进程，除非关机
1. 给此脚本添加执行权限
2. 执行此脚本
#!/bin/bash
trap 'echo ;echo -e "\033[35m你杀不死我的,没有人可以杀死我，哇哈哈！";sleep 5;
for i in {1..10}
do
echo -e "\033[34m我又开始运行了，哇哈哈！\033[0m"
done ;sleep 2' 2
while :
do
for i in `seq 1 3`
do
echo -en "\033[3$[i]m 我是病毒，我将会永远运行,哇哈哈！ \033[0m"
sleep 0.01
done
echo
done作者：朱明宇
名称：批量实现其他多台电脑可以免密码 SSH 本电脑
作用：批量将其他多台电脑的公钥拷贝给本电脑
1. 在此脚本的分割线内写入相应的内容
2. 给此脚本添加执行权限
3. 执行此脚本
1. nm=192.168.4.0 #网段，网段必须为 C 类网段，请保证格式和前 3 个网络位一定正确
2. sip=51 #起始 ip，起始 IP 地址，IP 地址 的范围是 0-255
3. lip=51 #结束 ip ，结束 IP 地址，IP 地址 的范围是 0-255
4. pd=123456 #其他服务器的 root 远程登录密码
5. lpd=Taren1 #本机的 root 远程登录密码
6. lh=192.168.4.254 #本机 IP 地址
1. 此脚本执行前必须要先保证执行本脚本的用户能无密码 ssh 远程这些远程服务器
2. 必须以 root 用户执行本脚本
#!/bin/bash
####################### Separator ########################
nm=192.168.4.0 #Network segment. The network segment must be a class C network segment. Please ensure that the format and the first three network bits are correct
sip=51 #Starting IP, starting IP address. The range of IP address is 0-255
lip=51 #End IP, end IP address. The range of IP address is 0-255
pd=123456 #Root remote login password of other servers
lpd=Taren1 #Root remote login password of this machine
lh=192.168.4.254 #Native IP address
####################### Separator ########################
fnm=${nm%.*}
set timeout 3
rpm -q expect
if [ $? -ne 0 ];then
yum -y install expect &> /dev/null
fi
for i in `seq $sip $lip`
do
expect << EOF
spawn ssh root@$fnm.$i
expect "(yes/no)?" {send "yes\r" }
expect "password:" {send "$pd\r" }
expect "#" {send "ssh-keygen\r"}
expect "(/root/.ssh/id_rsa):" {send "\r"}
expect "(empty for no passphrase):" {send "\r"}
expect "passphrase again:" {send "\r"}
expect "#" {send "\r"}
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "password:" {send "$pd\r" }
expect "#" {send "ssh-keygen\r"}
expect "(/root/.ssh/id_rsa):" {send "\r"}
expect "(empty for no passphrase):" {send "\r"}
expect "passphrase again:" {send "\r"}
expect "#" {send "\r"}
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "(yes/no)?" {send "yes\r" }
expect "#" {send "ssh-keygen\r"}
expect "(/root/.ssh/id_rsa):" {send "\r"}
expect "(empty for no passphrase):" {send "\r"}
expect "passphrase again:" {send "\r"}
expect "#" {send "\r"}
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "#" {send "ssh-keygen\r"}
expect "(/root/.ssh/id_rsa):" {send "\r"}
expect "(empty for no passphrase):" {send "\r"}
expect "passphrase again:" {send "\r"}
expect "#" {send "\r"}
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "password:" { send "$pd\r" }
expect "#" { send "ssh-copy-id -i ~/.ssh/id_rsa.pub root@$lh\r" }
expect "(yes/no)?" { send "yes\r" }
expect "root@$lh's password:" { send "$lpd\r" }
expect "#" { send "exit\r" }
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "password:" { send "$pd\r" }
expect "#" { send "ssh-copy-id -i ~/.ssh/id_rsa.pub root@$lh\r" }
expect "root@$lh's password:" { send "$lpd\r" }
expect "#" { send "exit\r" }
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "#" { send "ssh-copy-id -i ~/.ssh/id_rsa.pub root@$lh\r" }
expect "(yes/no)?" { send "yes\r" }
expect "root@$lh's password:" { send "$lpd\r" }
expect "#" { send "exit\r" }
EOF
expect << EOF
spawn ssh root@$fnm.$i
expect "#" { send "ssh-copy-id -i ~/.ssh/id_rsa.pub root@$lh\r" }
expect "root@$lh's password:" { send "$lpd\r" }
expect "#" { send "exit\r" }
EOF
echo "$fnm.$i has been finished"
done作者：朱明宇
名称：批量实现本电脑免密码 SSH 多个服务器
作用：将主本机的 SSH 公钥批量拷贝给其他多个远程服务器
1. 在此脚本的分割线内写入相应的内容
2. 给此脚本添加执行权限
3. 执行此脚本
1. nm=192.168.4.0 #网段，网段必须为 C 类网段，请保证格式和前 3 个网络位一定正确
2. sip=50 #起始 IP 地址，IP 地址 的范围是 0-255
3. lip=57 #结束 IP 地址，IP 地址 的范围是 0-255
4. pd=123456 #其他服务器的 root 远程登录密码
#!/bin/bash
####################### Separator ########################
nm=192.168.4.0
sip=50
lip=57
pd=123456
####################### Separator ########################
fnm=${nm%.*}
set timeout 3
rpm -q expect
if [ $? -ne 0 ];then
yum -y install expect &> /dev/null
fi
cat /root/.ssh/id_rsa &> /dev/null
if [ $? -ne 0 ];then
expect << EOF
spawn ssh-keygen
expect "(/root/.ssh/id_rsa):" {send "\r"}
expect "(empty for no passphrase):" {send "\r"}
expect "passphrase again:" {send "\r"}
expect "#" {send "\r"}
EOF
fi
for i in `seq $sip $lip`
do
echo $fnm.$i
ping -c3 -i0.3 -w1 $fnm.$i &> /dev/null
if [ $? -ne 0 ];then
echo "$fnm.$i can't be connected"
continue
fi
expect << EOF
spawn ssh-copy-id $fnm.$i
expect "? " {send "yes\r"}
expect "password:" {send "$pd\r"}
expect "#" {send "\r"}
EOF
expect << EOF
spawn ssh-copy-id $fnm.$i
expect "password:" {send "$pd\r"}
expect "#" {send "\r"}
EOF
echo "$fnm.$i has been finished"
done作者：朱明宇
名称：批量修改多个 MySQL root 的初始密码
作用：批量修改多个 MySQL root 的初始密码
1. 确认 MariaDB&MySQL 已提前装好
2. 在此脚本的分割线内写入相应的内容
3. 给此脚本添加执行权限
4. 执行此脚本
1. nm=192.168.4.0 #网段，网段必须为 C 类网段，请保证格式和前三个网络位一定正确
2. sip=51 #起始 ip，ip 的范围是 0-255
3. lip=53 #结束 ip，ip 的范围是 0-255
4. pd=123456 #想要修改的 MySQL 密码,至少必须要 ６ 个数
此脚本执行前必须要先保证执行本脚本的用户能无密码 ssh 远程这些远程服务器
#!/bin/bash
####################### Separator ########################
nm=192.168.4.0
sip=51
lip=53
pd=123456
####################### Separator ########################
fnm=${nm%.*}
set timeout 3
rpm -q expect
if [ $? -ne 0 ];then
yum -y install expect &> /dev/null
fi
for i in `seq $sip $lip`
do
echo $fnm.$i
ssh $fnm.$i 'grep validate_password_policy=0 /etc/my.cnf'
if [ $? -ne 0 ];then
ssh $fnm.$i 'sed -i "/^\[mysqld\]$/a validate_password_policy=0" /etc/my.cnf'
fi
ssh $fnm.$i 'grep validate_password_length=6 /etc/my.cnf'
if [ $? -ne 0 ];then
ssh $fnm.$i 'sed -i "/^\[mysqld\]$/a validate_password_length=6" /etc/my.cnf'
fi
ssh $fnm.$i 'systemctl restart mysqld'
a=`ssh $fnm.$i "grep 'password is generated for root@localhost' /var/log/mysqld.log" |tail -1 | awk '{print $NF}'`
expect << EOF
spawn ssh $fnm.$i "mysqladmin -uroot -p password $pd "
expect "Enter password:" {send "$a\r"}
expect "#" {send "\r"}
EOF
done