Linux——shell脚本实例进阶篇
linux-dash
A beautiful web dashboard for Linux
项目地址：https://gitcode.com/gh_mirrors/li/linux-dash
免费下载资源
·
实验一
利用case语句编写脚本，满足下列要求
1.执行create时根据userfile和passfile建立用户
2.执行delete时根据userfile删除用户
1.编写脚本：
[root@localhost mnt]# vim user_ctrl.sh
#!/bin/bash
read -p "Please input the operation (create or delete ): " OPERATION
//输入你要执行的动作
case $OPERATION in
create) //第一种情况：create
read -p "Please input the userfile : " USERFILE //提示输入文件
[ -e $USERFILE ] || { //判断是否存在
echo "$USERFILE is not exist "
exit 1
}
read -p "Please input the passwdfile ： " PASSFILE
[ -e $PASSFILE ] || {
echo "$PASSFILE is not exist "
exit 1
}
USERLINE=`awk 'BEGIN{N=0}{N++}END{print N}' $USERFILE` //计算userfile文件行数
for LINE_NUM in `seq 1 $USERLINE` //利用循环建立
do
USERNAME=`sed -n "${LINE_NUM}p" $USERFILE` //截取userfile文件第一行内容
PASSWORD=`sed -n "${LINE_NUM}p" $PASSFILE` //截取passfile文件第一行内容
useradd $USERNAME //建立用户
echo $PASSWORD | passwd --stdin $USERNAME
done
;;
delete) //第二种情况：delete
read -p "Please input the userfile ： " USERFILE
[ -e $USERFILE ] || {
echo "$USERFILE is not exist "
exit 1
}
USERLINE=`awk 'BEGIN{N=0}{N++}END{print N}' $USERFILE`
for LINE_NUM in `seq 1 $USERLINE`
do
USERNAME=`sed -n "${LINE_NUM}p" $USERFILE`
userdel -r $USERNAME
done
;;
*) //第三种情况：其余各种情况
echo Eorror!
;;
esac
2.执行：
[root@localhost mnt]# cat userfile
user1
user2
user3
[root@localhost mnt]# cat passfile
123
456
789
[root@localhost mnt]# sh user_ctrl.sh user
Please input the operation (create or delete ): hello //输入错误动作
Eorror!
[root@localhost mnt]# sh user_ctrl.sh user
Please input the operation (create or delete ): create
Please input the userfile : user //输入错误文件
user is not exist
[root@localhost mnt]# sh user_ctrl.sh user
Please input the operation (create or delete ): create
Please input the userfile : userfile
Please input the passwdfile ： passfile //建立用户
Changing password for user user1.
passwd: all authentication tokens updated successfully.
Changing password for user user2.
passwd: all authentication tokens updated successfully.
Changing password for user user3.
passwd: all authentication tokens updated successfully.
[root@localhost mnt]# sh user_ctrl.sh user
Please input the operation (create or delete ): delete //删除用户
Please input the userfile ： userfile
[root@localhost mnt]# id user1
id: user1: no such user
实验二
编写脚本auto_connect.exp满足要求：
执行：/mnt/auto_connect.exp IP password 时 密码正确，则通过 ssh 连接到该 IP 主机，并保持登陆。
1.编写脚本：
[root@foundation71 mnt]# vim auto_connect.sh
#!/bin/bash
/usr/bin/expect << EOF //切换到expect环境
spawn ssh root@$1 //ssh连接IP
expect {
"yes/no" { send "yes\r";exp_continue } //确认连接
"password" { send "$2\r" } //输入密码
}
Interact //保留
EOF //退出
2.执行：
[root@foundation71 mnt]# chmod +x auto_connect.sh //添加可执行权限
[root@foundation71 mnt]# sh auto_connect.sh 172.25.254.226 redhat //添加IP和密码
spawn ssh root@172.25.254.226
The authenticity of host '172.25.254.226 (172.25.254.226)' can't be established.
ECDSA key fingerprint is eb:24:0e:07:96:26:b1:04:c2:37:0c:78:2d:bc:b0:08.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.25.254.226' (ECDSA) to the list of known hosts.
root@172.25.254.226's password: [root@foundation71 mnt]# //自动化连接
实验三
编写脚本，当执行脚本host_ping.sh时，ping各个主机IP ，ping通，显示该IP的 hostname以及IP ，不能 ping 通，报错并显示 IP。
1.编写脚本：
#!/bin/bash
Auto_Connect()
{
/usr/bin/expect << EOF
set timeout 5
spawn ssh root@172.25.254.$IP_NUM hostname
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "westos\r" }
}
expect eof
EOF
}
for IP_NUM in {71..72}
do
ping -c1 -w1 172.25.254.$IP_NUM &> /dev/null && {
Host_Name=`Auto_Connect | grep -E "authenticity|fingerprint|connecting|password|spawn|Warning" -v` //过滤掉警告等语句
}
echo " $Host_Name 172.25.254.$IP_NUM"
done
2.执行：
##注意此时会出现一个覆盖问题
[root@foundation71 mnt]# sh host_ping.sh //执行未显示主机名
172.25.254.226
172.25.254.227
[root@foundation71 mnt]# sh -x host_ping.sh
+ for IP_NUM in '{226..227}'
+ ping -c1 -w1 172.25.254.226
++ Auto_Connect
++ grep -E 'authenticity|fingerprint|connecting|password|spawn|Warning' -v
++ /usr/bin/expect
+ Host_Name=$'localhost\r'
//此时这里有主机名，但是后面自动加了/r，这是因为expect是unix工具，在unix系统中/r是换行，但在linux中成了回车，会覆盖之前内容。
172.25.254.226 '
172.25.254.226
+ for IP_NUM in '{226..227}'
+ ping -c1 -w1 172.25.254.227
172.25.254.227 '
172.25.254.227 
3.我们将脚本做一个调整
#!/bin/bash
Auto_Connect()
{
/usr/bin/expect << EOF
set timeout 5
spawn ssh root@172.25.254.$IP_NUM hostname
expect {
yes/no { send "yes\r";exp_continue }
password { send "redhat\r" }
}
expect eof
EOF
}
for IP_NUM in {226..227}
do
ping -c1 -w1 172.25.254.$IP_NUM &> /dev/null && {
Host_Name=`Auto_Connect | grep -E "authenticity|fingerprint|connecting|password|spawn|Warning" -v`
}
echo "$Host_Name 172.25.254.$IP_NUM " | sed 's/\r//g' //将全文的/r换为空。
done
4.此时执行
[root@foundation71 mnt]# sh host_ping.sh //成功
localhost 172.25.254.226
localhost 172.25.254.227 
实验四
利用case语句备份数据库，要求
1.执行db_dump.sh westos (数据库密码）
2.脚本执行后会备份数据库中的所有数据到/mnt/mysqldump目录下
3.备份文件名称为“库名称.sql”,当此文件存在是跳过，并询问动作
4.输入”s“跳过备份，输入”b“备份“库名称.sql”文件为”库名称_backup.sql”，输入”o“覆盖原文件
1.编写脚本：
#!/bin/bash
DATABASE=`mysql -uroot -EN -e "show databases;" | grep -E "^\*|schema$" -v`
mkdir -p /mnt/mysqldump //建立目录
for DATABASE_NAME in $DATABASE
do
[ -e "/mnt/mysqldump/${DATABASE_NAME}.sql" ] || {
mysqldump -uroot $DATABASE_NAME > /mnt/mysqldump/${DATABASE_NAME}.sql
echo -e "${DATABASE_NAME}.sql is backup!!" //文件不存在，备份
} && { //文件存在时询问动作
read -p "[S]kip [B]ackup [O]verwrite Please input action: " ACTION
ACTION=`echo $ACTION | tr 'A-Z' 'a-z'`
case $ACTION in
s) //直接跳过
;;
b) //更新名字备份
mysqldump -uroot $DATABASE_NAME > /mnt/mysqldump/${DATABASE_NAME}_backup.sql
echo "${DATABASE_NAME}_backup.sql is backup!!"
;;
o) //覆盖备份
mysqldump -uroot $DATABASE_NAME > /mnt/mysqldump/${DATABASE_NAME}.sql
echo "${DATABASE_NAME}.sql is overwrite!!"
;;
exit) //退出
echo "bye"
exit 0
;;
*) //其他显示错误
echo error
esac
}
done
2.执行
[root@localhost mnt]# sh db_dump.sh
linux.sql is backup!!
[S]kip [B]ackup [O]verwrite Please input action: s
mysql.sql is backup!!
[S]kip [B]ackup [O]verwrite Please input action: exit
bye
[root@localhost mnt]# sh db_dump.sh
[S]kip [B]ackup [O]verwrite Please input action: b
linux_backup.sql is backup!!
[S]kip [B]ackup [O]verwrite Please input action: exit
bye
[root@localhost mnt]# sh db_dump.sh
[S]kip [B]ackup [O]verwrite Please input action: o
linux.sql is overwrite!!
[S]kip [B]ackup [O]verwrite Please input action: exit
bye
实验五
脚本要求：
1执行脚本 lamp.sh
2.脚本执行后部署好论坛，并设定 apache 的网络接口为 8080
1.编写脚本：
真机中执行脚本
#!/bin/bash
Auto_Discuz()
{
/usr/bin/expect << EOF
set timeout 30
spawn ssh root@$1
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "westos\r" }
}
expect "]#" { send "yum install httpd -y\r" }
expect "]#" { send "yum install mariadb-server -y\r"}
expect "]#" { send "yum install php-mysql.x86_64 -y\r"}
expect "]#" { send "systemctl start httpd\r" }
expect "]#" { send "systemctl start mariadb\r" }
expect eof
EOF
}
Auto_Connect()
{
/usr/bin/expect << EOF
set timeout 30
spawn ssh root@$1
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "westos\r" }
}
expect "]#" { send "cd /var/www/html/\r" }
expect "]#" { send "unzip /var/www/html/Discuz_X3.2_SC_UTF8.zip >> /dev/null \r" }
expect "]#" { send "chmod 777 /var/www/html/upload/ -R\r" }
expect "]#" { send "systemctl restart httpd\r" }
expect eof
EOF
}
Auto_Httpd()
{
/usr/bin/expect << EOF
set timeout 30
spawn ssh root@$1
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "westos\r" }
}
expect "]#" { send "sed "/^Listen/cListen 8080" -i /etc/httpd/conf/httpd.conf\r" }
expect "]#" { send "yum restart httpd -y\r" }
expect eof
EOF
}
yum install expect -y
Auto_Discuz $1
scp /home/kiosk/Downloads/Discuz_X3.2_SC_UTF8.zip root@$1:/var/www/html
Auto_Connect $1
firefox -new-tab $1/upload/install
Auto_Httpd $1
GitHub 加速计划 / li / linux-dash
10.39 K
1.2 K
下载
A beautiful web dashboard for Linux
最近提交(Master分支：2 个月前 )
186a802e
added ecosystem file for PM2 4 年前
5def40a3
Add host customization support for the NodeJS version 4 年前
旨在为数千万中国开发者提供一个无缝且高效的云端环境，以支持学习、使用和贡献开源项目。
更多推荐
12
0- 0
已为社区贡献2条内容
所有评论(0)