找文件差异
grep -f 选项可以匹配到文件a在文件b中所有相关的行（取a中有b中有的）
[root@centos-04 tmp]# vim b.txt vvvv root [root@centos-04 tmp]# grep -f b.txt /etc/passwd root:x:0:0:root:/root:/bin/bash operator:x:11:0:operator:/root:/sbin/nologin dockerroot:x:994:991:Docker User:/var/lib/docker:/sbin/nologin [root@centos-04 tmp]#
取passwd中有b文件中没有的
[root@centos-04 tmp]# grep -vf b.txt /etc/passwd
[root@centos-04 tmp]# vim 61.sh
#!/bin/bash
#这个脚本用来比较文件差异
#作者：SYJ
#日期：2019-03-13
cat a.txt|while read line
do
if ! grep -q "$line" b.txt
then
echo $line
fi
done > c.txt
wc -l c.txt
[root@centos-04 tmp]# sh 61.sh
3 c.txt
[root@centos-04 tmp]# cat c.txt
aaa
1111
2222
[root@centos-04 tmp]#
杀进程
[root@centos-04 tmp]# ps -u $USER|awk '$NF ~ /kworker/ {print $1}' |xargs kill
[root@centos-04 tmp]# vim 62.sh
#!/bin/bash
#这个脚本用来杀进程
#作者：SYJ
#日期：2019-03-13
ps -u $USER|awk '$NF ~ /kworker/ {print $1}' |xargs kill
并发备份数据库
split切割文件，默认文件名是aa、ab、ac这种，可以自定义名，我们下面例子用test为文件名前缀
[root@centos-04 tmp]# cat 1.txt 1 2 3 4 5 6 [root@centos-04 tmp]# split -l 2 1.txt [root@centos-04 tmp]# wc -l xa* 2 xaa 2 xab 2 xac 6 总用量 [root@centos-04 tmp]#
[root@centos-04 tmp]# cat xaa 1 2 [root@centos-04 tmp]# cat xab 3 4 [root@centos-04 tmp]# cat xac 5 6 [root@centos-04 tmp]#
[root@centos-04 tmp]# split -l 2 1.txt test [root@centos-04 tmp]# wc -l testa* 2 testaa 2 testab 2 testac 6 总用量 [root@centos-04 tmp]#
scale运算结果保留几位小数
[root@centos-04 tmp]# echo "scale=3;1000/265"|bc -l 3.773
wait命令会等后台运行的进程执行完再执行后面的命令
[root@centos-04 tmp]# sleep 10 & [1] 38044 [root@centos-04 tmp]# wait [1]+ 完成 sleep 10 [root@centos-04 tmp]#
jobs命令查看后台进程
[root@centos-04 tmp]# jobs [root@centos-04 tmp]#
[root@centos-04 tmp]# sleep 10 & [1] 38136 [root@centos-04 tmp]# jobs [1]+ 运行中 sleep 10 & [root@centos-04 tmp]#
[root@centos-04 tmp]# vim 63.sh
#!/bin/bash
#这个脚本用来并发备份数据库
#作者：SYJ
#日期：2019-03-14
N=2
mysql -uroot -p -h10.21.95.237 big -e "show tables"|sed '1d' > /tmp/table.txt
n=`wc -l /tmp/table.txt|awk '{print $1}'`
div()
{
n=`echo "scale=1;$1/$2"|bc`
n1=`echo "scale=1;$n+0.5"|bc`
echo $n1|cut -d. -f1
}
n1=`div $n $N`
split -l $n1 /tmp/table.txt
myd(){
for t in `cat $1`
do
mysqldump -uroot -p -h10.21.95.237 big $t > $t.sql
done
}
for f in xaa xab
do
myd $f &
done
wait
tar zcf mydb.tar.gz *.sql
rm -f $.sql
[root@centos-04 tmp]# sh 63.sh
监控CDN节点
cdn其实就是一个代理服务器，只不过这个代理服务器有缓存功能。用户访问的时候加入访问的是图片，用户直接可以在最近的cdn服务器上访问图片。
[root@centos-04 tmp]# vim 64.sh
#这个脚本用来监控CDN节点
#作者：SYJ
#!/bin/bash
#这个脚本用来监控CDN节点
#作者：SYJ
#日期：2019-04-08
s_ip=88.88.88.88
url=www.syj.com/index.php
ipf=/data/ip.list
curl -x$s_ip:80 $url 2>/dev/null >/tmp/source.txt
for ip in `cat $ipf`
do
curl -x$ip:80 $url 2>/dev/null >/tmp/$ip.txt
diff /tmp/source.txt /tmp/$ip.txt > /tmp/$ip.diff
n=`wc -l /tmp/$ip.diff|awk '{print $1}'`
if [ $n -gt 0 ]
then
echo "节点$ip有异常。"
fi
done
破解字符串
[root@centos-04 tmp]# vim 65.sh
#!/bin/bash
#这个脚本用来破解字符串
#作者：SYJ
#日期：2019-04-08
for i in `seq 0 32767`
do
m=`echo $i|md5sum |cut -c 1-8 `
echo $i $m
done > /tmp/md5.txt
cat > c.txt <<EOF
21029299
00205d1c
EOF
grep -f c.txt /tmp/md5.txt
[root@centos-04 tmp]# sh 65.sh 1346 00205d1c 25667 21029299
判断cpu厂商
[root@centos-04 tmp]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz stepping : 9 microcode : 0x16 cpu MHz : 3292.569 cache size : 3072 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts nopl
xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx f16c hypervisor lahf_lm epb fsgsbase
tsc_adjust smep dtherm arat pln pts bogomips : 6585.13 clflush size : 64 cache_alignment : 64 address sizes : 42 bits physical, 48 bits virtual power management: [root@centos-04 tmp]#
[root@centos-04 tmp]# grep '^vendor_id' /proc/cpuinfo |head -1 vendor_id : GenuineIntel [root@centos-04 tmp]#
[root@centos-04 tmp]# grep '^vendor_id' /proc/cpuinfo |head -1 |awk -F ': ' '{print $2}'
GenuineIntel
[root@centos-04 tmp]#
同步时间
[root@centos-04 tmp]# ntpdate time.windows.com 8 Apr 15:59:35 ntpdate[8808]: step time server 13.65.245.138 offset -28350.105140 sec [root@centos-04 tmp]# date 2019年 04月 08日 星期一 15:59:41 CST [root@centos-04 tmp]#
[root@centos-04 tmp]# vim 66.sh
#company[GenuineIntel]='CPU厂商是Intel'
#for name in GenuineIntel AMD
#do
# if [ $name == $cpu ]
# then
# echo ${company[$name]}
# else
# echo "CPU厂商是非主流厂商"
# fi
#done
#if [ $cpu == "AMD" ]
#then
# echo "CPU厂商是AMD"
#elif [ $cpu == "GenuineIntel" ]
#then
# echo "CPU厂商是Intel"
#else
# echo "CPU厂商是非主流厂商"
#fi
case $cpu in
AMD)
echo "CPU厂商是AMD"
;;
GenuineIntel)
echo "CPU厂商是Intel"
;;
*)
echo "CPU厂商是非主流厂商"
;;
esac
[root@centos-04 tmp]# sh 66.sh CPU厂商是Intel [root@centos-04 tmp]#
监控CPU使用率
用空白字符和百分号分割字符
[root@centos-04 tmp]# top -bn1 |grep 'Cpu(s):'|sed 's/^%//'|awk -F ' +|%' '{print $8}'
93.8
[root@centos-04 tmp]# vim 67.sh
#!/bin/bash
#这个脚本用来计算CPU使用率
#作者：SYJ
#日期：2019-04-08
while :
do
cpu_i=`top -bn1 |grep 'Cpu(s):'|sed 's/^%//'|awk -F ' +|%' '{print $8}'`
cpu_u=`echo 100-$cpu_i|bc`
if [ $cpu_u gt 90 ]
then
python mail.py xxx@xxx.com "CPU使用率偏高" "`top -bn1`"
fi
sleep 10
done
打印子进程
查看父进程ID是7046的子进程
[root@centos-04 tmp]# ps -elf |awk '$5==7046 {print $4}'
7052
7573
[root@centos-04 tmp]#
[root@centos-04 tmp]# vim 68.sh
#!/bin/bash
#这个脚本用来打印子进程
#作者：SYJ
#日期：2019-04-08
ps -elf > /tmp/pid.txt
read -p "Please input a pid: " p
if [ -z "$p" ]
then
echo "Please input a pid"
exit
fi
if ! grep -qw "$p" /tmp/pid.txt
then
echo "你输入的pid不存在"
exit
fi
get_cpid()
{
p1=$1
ps -elf |awk -v p2=$p1 '$5==p2 {print $4}' > /tmp/$p1.txt
n=`wc -l /tmp/$p1.txt|awk '{print $1}'`
if [ $n -eq 0 ]
then
echo "进程$1下没有子进程"
else
echo "进程$1下的子进程是："
cat /tmp/$p1.txt
fi
}
get_cpid $p
for c_p in `cat /tmp/$p.txt`
do
get_cpid $c_p
done
[root@centos-04 tmp]# sh 68.sh Please input a pid: 1 进程1下的子进程是： 3161 3184 3191 6542 6564 6565 6567 6568 6569 6598 6606 6610 6835 6836 6838 6969 7046 7772 进程3161下没有子进程 进程3184下没有子进程 进程3191下没有子进程 进程6542下没有子进程 进程6564下没有子进程 进程6565下没有子进程 进程6567下没有子进程 进程6568下没有子进程 进程6569下的子进程是： 6652 进程6598下没有子进程 进程6606下没有子进程 进程6610下没有子进程 进程6835下没有子进程 进程6836下的子进程是： 7189 进程6838下没有子进程 进程6969下的子进程是： 6970 6971 进程7046下的子进程是： 7052 7573 进程7772下没有子进程 [root@centos-04 tmp]#
给lamp环境增加项目
[root@centos-04 tmp]# vim 69.sh
#!/bin/bash
#本脚本的功能是在LAMP环境中增加站点，包括apache配置、FTP增加用户、Mysql增加库和用户
#作者：SYJ
#日期：2019-04-09
#网站目录
webdir=/data/wwwroot
#ftp的虚拟用户配置文件目录
ftpudir=/etc/vsftpd/vuuser
#ftp虚拟用户密码文件
ftpuserfile=/root/login
#mysql命令行登录root
mysqlc="/usr/local/mysql/bin/mysql -uroot -proot"
#apache虚拟主机配置文件
httpd_config_f="/usr/local/apache2/conf/extra/httpd-vhosts.conf"
#定义增加Mysql库和用户的函数
add_mysql_user()
{
#生成随机密码
mysql_p=`mkpasswd -s 0 -l 12`
#将密码保存到临时文件里，这里的$pro为用户自定义的项目名字
echo "$pro $mysql_p" >/tmp/$pro.txt
#这里使用嵌入文档的形式（需顶格），将创建用户并授权的命令传递给mysql
$mysqlc <<EOF
create database $pro;
grant all on $pro.* to "$pro"@'127.0.0.1' identified by "$mysql_p";
#下面这个EOF必须要顶格
EOF
}
#定义增加FTP用户的函数
add_ftp_user()
{
ftp_P=`mkpasswd -s 0 -l 12`
echo "$pro" >> $ftpuserfile
echo "$ftp_p" >> $ftpuserfile
#将用户、密码文件转换为密码db文件
db_load -T -t hash -f $ftpuserfile /etc/vsftpd/vsftpd_login.db
cd $ftpudir
#这里的aaa是一个文件，是之前的一个项目，可以作为配置模板
cp aaa $pro
#把里面的aaa改为新的项目名字
sed -i "s/aaa/$pro/" $pro
#重启vsftpd服务
/etc/init.d/vsftpd restart
}
#定义增加apache虚拟主机的函数
config_httpd()
{
#增加网站根目录，和域名保持一致，这里的$dom为用户自定义的域名
mkdir $webdir/$dom
#将网站根目录属主和属组设置为ftp用户
chown vsftpd:vsftpd $webdir/$dom
#用嵌入文档（需顶格），把虚拟主机配置写入到配置文件里
cat >> $httpd_config_f <<EOF
<VirtualHost *.80>
DocumentRoot $webdir/$dom
ServerName $dom
<Directory $webdir/$dom>
AllowOverride none
Require all granted
</Directory>
EOF
#重载apache服务
/usr/local/apache2/bin/apachectl graceful
}
read -p "input the project name: " pro
read -p "input the domain: " dom
add_mysql_user
add_ftp_user
config_httpd
简易计算器
[root@centos-04 tmp]# vim 70.sh
#!/bin/bash
#这个脚本用来实现简易计算器
#作者：SYJ
#日期：2019-04-09
if [ $# -ne 3 ]
then
echo "你输出的参数个数不对，应该给3个参数"
exit
fi
if_number()
{
n1=`echo $1|sed 's/[0-9.]//g'`
if [ -n "$n1" ]
then
echo "$1不是数字"
exit
fi
if echo $1|grep -q '^.'
then
echo "数字$1不合法"
exit
fi
}
if_number $1
if_number $3
case $2 in
+)
echo "$1+$3"|bc
;;
-)
echo "$1-$3"|bc
;;
*)
echo "$1*$3"|bc
;;
/)
echo "scale=2;$1/$3"|bc
;;
*)
echo "你给出的格式不对，第二个参数只能是+,-,*,/"
;;
esac
[root@centos-04 tmp]# sh 70.sh 1 2 3
你给出的格式不对，第二个参数只能是+,-,*,/
[root@centos-04 tmp]# sh 70.sh 1 + 3
4
[root@centos-04 tmp]# sh 70.sh 1 - 3
-2
[root@centos-04 tmp]# sh 70.sh 1 '*' 3
3
[root@centos-04 tmp]# sh 70.sh 1 * 3
3
[root@centos-04 tmp]# sh 70.sh 1 / 3
.33
[root@centos-04 tmp]#
判断文件并计算单词
[root@centos-04 tmp]# vim 71.sh
#!/bin/bash
#这个脚本用来判断文件是否存在并计算单词个数
#作者：SYJ
#日期2019-04-09
if [ $# -ne 2 ]
then
echo "请提供两个参数，第一个参数是目录名字，第二个参数是单词"
exit
fi
cd $1
for f in `ls .`
do
if [ -d $f ]
then
if [ -f $f/test.txt ]
then
n=`grep -cw "$2" $f/test.txt`
echo "$1/$f目录下面有test.txt, 该test.txt里面有$n个$2"
fi
fi
done
打印正方形
[root@centos-04 tmp]# for i in `seq 1 3`; do for j in `seq 1 3`; do echo -n "口 "; done; echo ; done 口 口 口 口 口 口 口 口 口 [root@centos-04 tmp]#
[root@centos-04 tmp]# vim 72.sh
#!/bin/bash
#这个脚本用来打印正方形
#作者：SYJ
#日期：2019-04-09
while :
do
read -p "Please input a number: " n
n1=`echo $n|sed 's/[0-9]//g'`
if [ -n "$n1" ]
then
echo "$n is not a number"
continue
else
break
fi
done
for i in `seq 1 $n`
do
for j in `seq 1 $n`
do
echo -n "口 "
done
echo
done
[root@centos-04 tmp]# sh 72.sh
Please input a number: 4
口 口 口 口
口 口 口 口
口 口 口 口
口 口 口 口
[root@centos-04 tmp]# sh 72.sh
Please input a number: 5
口 口 口 口 口
口 口 口 口 口
口 口 口 口 口
口 口 口 口 口
口 口 口 口 口
[root@centos-04 tmp]#
问候用户
[root@centos-04 tmp]# awk -F ':' '{print "Hello, "$1", your uid is "$3"."}' /etc/passwd
Hello, root, your uid is 0.
Hello, bin, your uid is 1.
Hello, daemon, your uid is 2.
Hello, adm, your uid is 3.
Hello, lp, your uid is 4.
Hello, sync, your uid is 5.
[root@centos-04 tmp]# vim 73.sh
#!/bin/bash
#这个脚本用来问候用户
#作者：SYJ
#日期：2019-04-09
cat /etc/passwd |while read line
do
username=`echo $line|awk -F ':' '{print $1}'`
uid=`echo $line|awk -F ':' '{print $3}'`
echo "Hello,$username,your uid is $uid"
done
[root@centos-04 tmp]# sh 73.sh Hello,root,your uid is 0 Hello,bin,your uid is 1 Hello,daemon,your uid is 2 Hello,adm,your uid is 3
格式化输出xml
[root@centos-04 tmp]# vim 74.sh
#!/bin/bash
#这个脚本用来格式化xml文件
#作者：SYJ
#日期：2019-04-09
sed '/<!--.*-->/d' test.xml > test2.xml #注释在一行的情况
egrep -n '<!--|-->' test2.xml |awk -F ':' '{print $1}' > /tmp/line_number1.txt #注释在两行的情况计算行号
n=`wc -l /tmp/line_number1.txt|awk '{print $1}'`
n1=$[$n/2]
for i in `seq 1 $n1`
do
j=$[$i*2]
k=$[$j-1]
x=`sed -n "$k"p /tmp/line_number1.txt`
y=`sed -n "$j"p /tmp/line_number1.txt`
sed -i "$x,$y"d test2.xml
done
grep -n 'artifactItem>' test2.xml |awk '{print $1}' |sed 's/://' > /tmp/line_number2.txt
n2=`wc -l /tmp/line_number2.txt|awk '{print $1}'`
get_value()
{
sed -n "$1,$2"p test2.xml|awk -F '<' '{print $2}' |awk -F '>' '{print $1,$2}' > /tmp/value.txt
cat /tmp/value.txt|while read line
do
x=`echo $line|awk '{print $1}'`
y=`echo $line|awk '{print $2}'`
echo artifactItem:$x:$y
done
}
n3=$[$n2/2]
for j in `seq 1 $n3`
do
m1=$[$j*2-1]
m2=$[$j*2]
nu1=`sed -n "$m1"p /tmp/line_number2.txt`
nu2=`sed -n "$m2"p /tmp/line_number2.txt`
nu3=$[$nu1+1]
nu4=$[$nu2-1]
get_value $nu3 $nu4
done
小函数
[root@centos-04 tmp]# vim 75.sh
#!/bin/bash
#这个脚本用来写一个小函数
#作者：SYJ
#日期：2019-04-09
f_judge()
{
if [ -d /home/log ]
then
#find /home -name "tmp*" |xargs -i mv {} /home/log/
find /home -name "tmp*" -exec mv {} /home/log/ ;
else
mkdir /home/log
exit
fi
}
f_judge
批量杀进程
殺死tomcat進程
[root@centos-04 tmp]# ps aux |grep tomcat |awk '{print $2}' |xargs kill
[root@centos-04 tmp]# vim 76.sh
#!/bin/bash
#这个脚本用来批量杀tomcat进程
#作者：SYJ
#日期：2019-04-09
cat > kill_tomcat.expect <<EOF
#!/usr/bin/expect
set passwd [lindex $argv 0]
set host [lindex $argv 1]
spawn ssh root@$host
expect {
"yes/no" { send "yes
"; exp_continue}
"password:" { send "$passwd
" }
}
expect "]*"
send "killall java
"
expect "]*"
send "exit
"
EOF
chmod a+x kill_tomcat.expect
cat ip-pwd.ini|while read line
do
ip=`echo $line |awk -F ',' '{print $1}'`
pw=`echo $line |awk -F ',' '{print $3}'`
./kill_tomcat.expect $pw $ip
done
查找老日志打包
[root@centos-04 tmp]# vim 77.sh #!/bin/bash #这个脚本用来查找老日志打包 #作者：SYJ #日期：2019-04-09 cd /data/log fin . -type f -name "*.log" -mtime +3 > /tmp/old_log d=`date +%F` tar czf $d.tar.gz `cat /tmp/old_log|xargs` rsync -a $d.tar.gz 192.168.1.2:/data/log/ cat /tmp/old_log|xargs rm
处理文本
[root@centos-04 tmp]# vim 78.sh
#!/bin/bash
#这个脚本用来处理文本
#作者：SYJ
#日期:2019-04-09
for w in `awk -F ':' '{print $1}' 3.txt |sort |uniq`
do
echo "[$w]"
awk -v w2=$w -F ':' '$1==W2 {print $2}' 3.txt
done
批量删除日志
[root@centos-04 tmp]# vim 79.sh
#!/bin/bash
#这个脚本用来删除老日志
#作者：SYJ
#日期：2019-04-09
dir1=/opt/cloud/log/
dir2=/opt/cloud/instance/
if [ -d $dir1 ]
then
find $dir1 -type f -mtime +7 |xargs rm
elif [ -d $dir2 ]
then
find $dir2 -name "*.log" -type f -mtime +15 |xargs rm
fi
房贷计算器
#!/bin/bash
#这个脚本用来实现简易的房贷计算器
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-12
read -p "请输入贷款总额（单位：万元）：" sum_w
read -p "请输入贷款年利率（如年利率为6.5%，直接输入6.5）：" y_r
read -p "请输入贷款年限（单位：年）：" y_n
echo "贷款计算方式："
echo "1)等额本金计算法"
echo "2)等额本息计算法"
read -p "请选择贷款方式（1|2）" type
#贷款总额
sum=`echo "scale=2;$sum_w*10000 " | bc -l`
#年利率
y_r2=`echo "scale=6;$y_r/100 " | bc -l`
#月利率
m_r=`echo "scale=6;$y_r2/12 " | bc -l`
#期数
count=$[$y_n*12]
echo "期次 本月还款额 本月利息 未还款额"
jin()
{
#月还款本金m_jin=贷款总额sum/期数count
m_jin=`echo "scale=2;($sum/$count)/1 " | bc -l`
#定义未还本金r_jin（第一期应该是贷款总额）
r_jin=$sum
for((i=1;i<=$count;i++))
do
#本月利息m_xi=剩余本金*月利率
m_xi=`echo "scale=2;( $r_jin*$m_r)/1"|bc -l`
#本月还款m_jinxi=月还本金m_jin+本月利息m_xi
m_jinxi=`echo "scale=2;( $m_jin+$m_xi)/1"|bc -l`
#已还款本金jin=月还本金m_jin*期数i
jin=`echo "scale=2;( $m_jin*$i)/1"|bc -l`
#剩余本金r_jin=贷款总额sum-已还本金jin
r_jin=`echo "scale=2;( $sum-$jin)/1"|bc -l`
if [ $i -eq $count ]
then
#最后一月的还款额应该是每月还款本金+本月利息+剩余本金
m_jinxi=`echo "scale=2;( $m_jin+$r_jin+$m_xi)/1"|bc -l`
#最后一月的剩余本金应该是0
r_jin=0
fi
echo "$i $m_jinxi $m_xi $r_jin"
done
}
xi()
{
#每期还款m_jinxi=(贷款总额sum*月利率m_r*((1+月利率m_r）^期数count))/(((1+月利率m_r)^期数count)-1)
m_jinxi=`echo "scale=2;(($sum*$m_r*((1+$m_r)^$count))/(((1+$m_r)^$count)-1))/1 " | bc -l`
#定义未还本金r_jin（第一期应该是贷款总额）
r_jin=$sum
for((i=1;i<=$count;i++))
do
#本期利息m_xi=剩余本金r_jin*月利率m_r
m_xi=`echo "scale=2;( $r_jin*$m_r)/1"|bc -l`
#本期本金m_jin=本期本息m_jinxi-本期利息m_xi
m_jin=`echo "scale=2;($m_jinxi-$m_xi)/1 " | bc -l`
#未还本金r_jin=上期未还本金r_jin-本期应还本金m_jin
r_jin=`echo "scale=2;($r_jin-$m_jin)/1 " | bc -l`
if [ $i -eq $count ]
then
#最后一月本息m_jinxi=本期本金m_jin+未还本金r_jin
m_jinxi=`echo "scale=2;($m_jin+$r_jin)/1 " | bc -l`
#最后一月的剩余本金应该是0
r_jin="0.00"
fi
echo "$i $m_jinxi $m_xi $r_jin"
done
}
case $type in
1)
jin
;;
2)
xi
;;
*)
exit 1
;;
esac
监控磁盘
[root@centos-04 tmp]# vim 81.sh
#!/bin/bash
#这个脚本用来监控磁盘IO
#作者：SYJ
#日期：2019-04-10
if ! while iostat &>/dev/null
then
yum install -y sysstat
fi
while :
do
t=`date +%T`
iostat -xd 1 5 |grep '^sda' > /tmp/io.log
sum=`awk '{sum=sum+$NF} END {print sum}' /tmp/io.log`
a=`echo "scale=2;$sum/5" |bc`
b=`echo $a|cut -d . -f 1`
if [ $b -gt 90 ]
then
mysql -uroot -pxxx -e "show processlist" > mysql_$t.log
fi
sleep 1
done
查看tomcat日志
#!/bin/bash
#这个脚本用来查看Tomcat日志
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-12
LANG=en
logfile="/opt/TOM/$1/logs/catalina.out"
#将当天的英文月、数字日期、数字年作为变量赋值给d_mdy
d_mdy=`date "+%b %d, %Y"`
#判断参数个数
if [ $# -ne 2 ] && [ $# -ne 3 ]
then
echo "你提供的参数个数不对，请提供2个或者3个参数。例：sh $0 t1 08:01:00 14:00:00"
exit 1
fi
#判断第一个参数是否符合要求
if ! echo $1|grep -qE '^t1$|^t2$|^t3$|^t4$'
then
echo "第一个参数必须是t1、t2、t3或t4"
exit 1
fi
#判断时间有效性
judge_time()
{
date -d "$1" +%s &>/dev/null
if [ $? -ne 0 ]
then
echo "你提供的时间$1格式不正确"
exit 1
fi
}
#将24小时制时间转换为12小时
tr_24_12()
{
date -d "$1" +%r
}
#判断提供的时间点是否在日志中出现
judge_time_in_log()
{
if ! grep -q "$d_mdy $(tr_24_12 $1)" $logfile
then
echo "你提供的时间$1在日志$logfile中不曾出现，请换一个时间点"
exit 1
fi
}
#判断第2个参数是否合法
judge_time $2
#判断起始时间点是否出现在日志里
judge_time_in_log $2
#如果提供第3个参数
if [ $# -eq 3 ]
then
#判断第3个参数是否合法
judge_time $3
#判断起始时间是否早于结束时间
t1=`date -d "$2" +%s`
t2=`date -d "$3" +%s`
if [ $t2 -lt $t1 ]
then
echo "你提供的时间$2比$3要晚，应该把早的时间放到前面"
exit
fi
#判断提供的结束时间点是否出现在日志中
judge_time_in_log $3
fi
#取起始时间所在行行号
begin_n=`grep -n "$d_mdy $(tr_24_12 $2)" $logfile|head -1|awk -F ':' '{print $1}'`
#取结束时间所在行行号，并用sed截取日志内容
if [ $# -eq 3 ]
then
n=`grep -n "$d_mdy $(tr_24_12 $3)" $logfile|tail -1|awk -F ':' '{print $1}'`
#结束日期所在行的下一行才是日志的内容
end_n=$[$n+1]
sed -n "$begin_n,$end_n"p $logfile
else
sed -n "$begin_n,$"p $logfile
fi
打印城市名字
打印数组
[root@centos-04 tmp]# a=(1,2,3,4,5)
[root@centos-04 tmp]# echo ${a[@]}
1,2,3,4,5
[root@centos-04 tmp]#
[root@centos-04 tmp]# a="1 2 3"
[root@centos-04 tmp]# echo $a
1 2 3
[root@centos-04 tmp]# b=($a)（把带空格的字符串变成数组加一个（）就行了，这样b就变成一个数组了）
[root@centos-04 tmp]# echo $b
1
[root@centos-04 tmp]# echo ${b[@]}
1 2 3
[root@centos-04 tmp]#
获取数组的个数
[root@centos-04 tmp]# echo ${#b[@]}
3
[root@centos-04 tmp]#
[root@centos-04 tmp]# vim 83.sh
#!/bin/bash
#这个脚本用来打印城市名字
#作者：SYJ
#日期：2019-04-10
read -p "输入不少于5个城市的名字，用空格分隔开。" name
n=`echo $name|awk '{print NF}'`
if [ $n -lt 5 ]
then
echo "请输入至少5个城市的名字。"
exit
fi
city=($name)
#echo ${city[@]}
for i in `seq 0 $[${#city[@]}-1]`
do
echo ${city[$i]}
done
[root@centos-04 tmp]# sh 83.sh 输入不少于5个城市的名字，用空格分隔开。1 2 3 4 5 1 2 3 4 5 [root@centos-04 tmp]#
代码上线
[root@centos-04 tmp]# vim 84.sh
#!/bin/bash
#这个脚本用来代码上线
#作者：SYJ
#日期：2019-04-10
dir=/data/wwwroot/www.aaa.com
B_Ip=1.1.1.1
C_Ip=2.2.2.2
rs()
{
rsync -azP --exclude="logs"
--exclude="tmp" --exclude="upload"
--exclude="caches" $dir/ $1:$dir/
}
read -p "该脚本将会把本机的$dir下的文件同步到$B_IP和$c_ip上，是否要继续？y|n" c
case $c in
y|Y)
rs B_IP
rs C_IP
;;
n|N)
exit
;;
*)
echo "你只能输入y或者n。"
;;
esac
统计并发量
[root@centos-04 tmp]# date -d "-1 second" +%d/%b/%Y:%T 10/4月/2019:23:15:59 [root@centos-04 tmp]#
[root@centos-04 tmp]# vim 85.sh #!/bin/bash #这个脚本用来计算网站并发量 #作者：SYJ #日期：2019-04-10 LANG=en t=`date -d "-1 second" + %d/%b/%Y:%T` log=/data/logs/www.aaa.com_access.log tail -1000 $log |grep -c "$t"
关闭服务
chkconfig --list查看到服务的状态（查看第三列）
[root@centos-04 tmp]# chkconfig --list
注：该输出结果只显示 SysV 服务，并不包含
原生 systemd 服务。SysV 配置数据
可能被原生 systemd 配置覆盖。
要列出 systemd 服务，请执行 'systemctl list-unit-files'。
查看在具体 target 启用的服务请执行
'systemctl list-dependencies [target]'。
netconsole 0:关 1:关 2:关 3:关 4:关 5:关 6:关
network 0:关 1:关 2:开 3:开 4:开 5:开 6:关
nginx 0:关 1:关 2:开 3:开 4:开 5:开 6:关
[root@centos-04 tmp]#
[root@centos-04 tmp]# LANG=en
[root@centos-04 tmp]# chkconfig --list
Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.
If you want to list systemd services use 'systemctl list-unit-files'.
To see services enabled on particular target use
'systemctl list-dependencies [target]'.
netconsole 0:off 1:off 2:off 3:off 4:off 5:off 6:off
network 0:off 1:off 2:on 3:on 4:on 5:on 6:off
nginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@centos-04 tmp]#
[root@centos-04 tmp]# chkconfig --list |grep '3:on' |awk '{print $1}'
Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.
If you want to list systemd services use 'systemctl list-unit-files'.
To see services enabled on particular target use
'systemctl list-dependencies [target]'.
network
nginx
[root@centos-04 tmp]#
[root@centos-04 tmp]# vim 86.sh
#!/bin/bash
#这个脚本用来关闭服务
#作者：SYJ
#日期：2019-04-10
LANG=en
while :
do
chkconfig --list 2>/dev/null|grep '3:on' |awk '{print $1}' > /tmp/on_sev.txt
echo -e " 33[32m系统里开启了这些服务: 33[0m"
cat /tmp/on_sev.txt
echo
read -p "Please select a service from this list." s
if ! grep -qw "$s" /tmp/on_sev.txt
then
echo -e " 33[31m The service is not in the service list.33[0m"
continue
fi
chkconfig $s off
break
done
~
~
~
~
~
~
~
~
~
~
"86.sh" 23L, 474C 已写入
[root@centos-04 tmp]# sh 86.sh
系统里开启了这些服务:
network
nginx
Please select a service from this list.nginx
[root@centos-04 tmp]# sh 86.sh
系统里开启了这些服务:
network
Please select a service from this list.
彻底关闭tomcat服务
[root@centos-04 tmp]# vim 87.sh
#!/bin/bash
#这个脚本用来彻底杀死Tomcat进程
#作者：SYJ
#日期：2019-04-10
dir=/usr/local/tomcat/bin/
java_pc()
{
pgrep java|wc -l
}
cd $dir
./shutdown.sh
count=0
while [ $count -lt 5 ]:
do
n=`java_pc`
if [ $n -gt 0 ]
then
killall java
count=$[$count+1]
sleep 1
else
break
fi
done
n=`java_pc`
if [ $n -gt 0 ]
then
killall -9 java
fi
n=`java_pc`
if [ $n -gt 0 ]
then
echo "Tomcat can not killed"
exit
fi
cd $dir
./startup.sh
去掉文件名后缀
[root@centos-04 tmp]# vim 88.sh
#!/bin/bash
#这个脚本用来去掉文件名后缀
#作者：SYJ
#日期：2019-04-10
for f in `ls -d ./*.bak`
do
# mv $f `echo $f|sed 's/.bak$//'`
f1=`echo $f|awk -F '.bak$' {print $1}`
mv $f $f1
done
检查域名是否到期
[root@centos-04 tmp]# whois baidu.com |grep 'Expiration Date' Registrar Registration Expiration Date: 2026-10-11T00:00:00-0700 [root@centos-04 tmp]#
#!/bin/bash
#这个脚本用来检查域名是否到期
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-14
mail_u=admin@admin.com
#当前日期时间戳，用于和域名的到期时间做比较
t1=`date +%s`
#检测whois命令是否存在，不存在则安装jwhois包
is_install_whois()
{
which whois >/dev/null 2>/dev/null
if [ $? -ne 0 ]
then
yum install -y epel-release
yum install -y jwhois
fi
}
notify()
{
#e_d=`whois $1|grep 'Expiry Date'|awk '{print $4}'|cut -d 'T' -f 1`
e_d=`whois $1|grep 'Expiration'|tail -1 |awk '{print $5}' |awk -F 'T' '{print $1}'`
#如果e_d的值为空，则过滤关键词'Expiration Time'
if [ -z "$e_d" ]
then
e_d=`whois $1|grep 'Expiration Time'|awk '{print $3}'`
fi
#将域名过期的日期转化为时间戳
e_t=`date -d "$e_d" +%s`
#计算一周一共有多少秒
n=`echo "86400*7"|bc`
e_t1=$[$e_t-$n]
e_t2=$[$e_t+$n]
if [ $t1 -ge $e_t1 ] && [ $t1 -lt $e_t ]
then
python mail.py $mail_u "Domain $1 will to be expired." "Domain $1 expire date is $e_d."
fi
if [ $t1 -ge $e_t ] && [ $t1 -lt $e_t2 ]
then
python mail.py $mail_u "Domain $1 has been expired" "Domain $1 expire date is $e_d."
fi
}
#检测上次运行的whois查询进程是否存在
#若存在，需要杀死进程，以免影响本次脚本执行
if pgrep whois &>/dev/null
then
killall -9 whois
fi
is_install_whois
for d in aaa.com bbb.com aaa.cn
do
notify $d
done
自动密钥认证
#!/bin/bash
#这个脚本用来自动配置密钥认证
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-14
read -p "输入一个IP地址: " ip
read -p "输入此机器的root密码: " pasd
is_install()
{
if ! rpm -q $1 &>/dev/null
then
yum install -y $1
fi
}
is_install openssh-clients
is_install expect
if [ ! -f ~/.ssh/id_rsa.pub ]
then
echo -e "
" |ssh-keygen -P ''
fi
cat > key.expect <<EOF
#!/usr/bin/expect
set host [lindex $argv 0]
set passwd [lindex $argv 1]
spawn ssh-copy-id root@$host
expect {
"yes/no" { send "yes
"; exp_continue}
"password:" { send "$passwd
" }
}
expect eof
EOF
chmod a+x key.expect
./key.expect $ip $pasd
普通我们将本机的ssh公钥放到另一台机器的方法(id_rsa.pub文件内容放到对方机器的authorized_keys里面)
root@centos-04 tmp]# cat ~/.ssh/id_rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7oSVWcFIwNAku8g3gXBD79HH1H/7hZg5hshKyQWvPT7q+pzFGiZ0H3zZgG0kHU6j9BB1t/NAooiKmOF5sJmzuDed6
rBeLOw210kG7r9cfU/yHrUljTXjETQQVrlG7LRrW6kwNOoXaJceau60s2P9b91hN3unLqu+wscAC6CfCyIJm2epniltMOgBrRXx7ghOQ3XVkvC84N/9koyC8fypZNeTb
7l/QzeGZNsXDUVChuP9z9mCMaedGGvhfGfPY7qZO0b0aeU8didYSXubekp4rI8JUuPuhOSK49+TxXe0QivtByiZycM69D1XZU5Pilr4f3gbFQc4bSBpbgXkKVpu7 root@centos-04 [root@centos-04 tmp]# vim ~/.ssh/authorized_keys ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7oSVWcFIwNAku8g3gXBD79HH1H/7hZg5hshKyQWvPT7q+pzFGiZ0H3zZgG0kHU6j9BB1t/NAooiKmOF5sJmzuDed6 rBeLOw210kG7r9cfU/yHrUljTXjETQQVrlG7LRrW6kwNOoXaJceau60s2P9b91hN3unLqu+wscAC6CfCyIJm2epniltMOgBrRXx7ghOQ3XVkvC84N/9koyC8fypZNeTb 7l/QzeGZNsXDUVChuP9z9mCMaedGGvhfGfPY7qZO0b0aeU8didYSXubekp4rI8JUuPuhOSK49+TxXe0QivtByiZycM69D1XZU5Pilr4f3gbFQc4bSBpbgXkKVpu7 roo t@centos-04
我们也可以用ssh-copy-id命令实现，输入对方的用户名和ip
[root@centos-04 tmp]# ssh-copy-id root@1.1.1.1
[root@centos-04 tmp]# vim 1.expect
#!/usr/bin/expect
set host [lindex $argv 0]
set passwd [lindex $argv 1]
spawn ssh-copy-id root@$host
expect {
"yes/no" { send "yes
"; exp_continue}
"password:" { send "$passwd
" }
}
expect eof
[root@centos-04 tmp]# ./1.expect 127.0.0.1 root
spawn ssh-copy-id root@127.0.0.1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: WARNING: All keys were skipped because they already exist on the remote system.
(if you think this is a mistake, you may want to use -f option)
expect: spawn id exp6 not open
while executing
"expect eof"
(file "./1.expect" line 9)
[root@centos-04 tmp]#
[root@centos-04 tmp]# ssh-copy-id root@127.0.0.1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: WARNING: All keys were skipped because they already exist on the remote system.
(if you think this is a mistake, you may want to use -f option)
[root@centos-04 tmp]# ssh-copy-id -f root@127.0.0.1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'root@127.0.0.1'"
and check to make sure that only the key(s) you wanted were added.
[root@centos-04 tmp]#
[root@centos-04 tmp]# cat /root/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7oSVWcFIwNAku8g3gXBD79HH1H/7hZg5hshKyQWvPT7q+pzFGiZ0H3zZgG0kHU6j9BB1t/NAooiKmOF5sJmzuDed6rBeLOw210kG7r9cfU/
yHrUljTXjETQQVrlG7LRrW6kwNOoXaJceau60s2P9b91hN3unLqu+wscAC6CfCyIJm2epniltMOgBrRXx7ghOQ3XVkvC84N/9koyC8fypZNeTb7l/QzeGZNsXDUVChuP9z9mCMaedGGvhfGfPY
7qZO0b0aeU8didYSXubekp4rI8JUuPuhOSK49+TxXe0QivtByiZycM69D1XZU5Pilr4f3gbFQc4bSBpbgXkKVpu7 root@centos-04
[root@centos-04 tmp]#
[root@centos-04 tmp]# cat /root/.ssh/authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7oSVWcFIwNAku8g3gXBD79HH1H/7hZg5hshKyQWvPT7q+pzFGiZ0H3zZgG0kHU6j9BB1t/NAooiKmOF5sJmzuDed6rBeLOw210kG7r9cfU/
yHrUljTXjETQQVrlG7LRrW6kwNOoXaJceau60s2P9b91hN3unLqu+wscAC6CfCyIJm2epniltMOgBrRXx7ghOQ3XVkvC84N/9koyC8fypZNeTb7l/QzeGZNsXDUVChuP9z9mCMaedGGvhfGfPY
7qZO0b0aeU8didYSXubekp4rI8JUuPuhOSK49+TxXe0QivtByiZycM69D1XZU5Pilr4f3gbFQc4bSBpbgXkKVpu7 root@centos-04
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7oSVWcFIwNAku8g3gXBD79HH1H/7hZg5hshKyQWvPT7q+pzFGiZ0H3zZgG0kHU6j9BB1t/NAooiKmOF5sJmzuDed6rBeLOw210kG7r9cfU/
yHrUljTXjETQQVrlG7LRrW6kwNOoXaJceau60s2P9b91hN3unLqu+wscAC6CfCyIJm2epniltMOgBrRXx7ghOQ3XVkvC84N/9koyC8fypZNeTb7l/QzeGZNsXDUVChuP9z9mCMaedGGvhfGfPY
7qZO0b0aeU8didYSXubekp4rI8JUuPuhOSK49+TxXe0QivtByiZycM69D1XZU5Pilr4f3gbFQc4bSBpbgXkKVpu7 root@centos-04
[root@centos-04 tmp]#
查看一个命令由那个包装的
[root@centos-04 tmp]# which ssh-copy-id /usr/bin/ssh-copy-id [root@centos-04 tmp]# rpm -qf /usr/bin/ssh-copy-id openssh-clients-7.4p1-16.el7.x86_64 [root@centos-04 tmp]#
部署MySQL主从
[root@centos-04 tmp]# vim 91.sh
#!/bin/bash
#这个脚本用来配置MySQL主从同步
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-17
#!/bin/bash
master_ip=192.168.100.12
slave_ip=192.168.100.13
mysqlc="mysql -uroot -paminglinux"
check_ok()
{
if [ $? -ne 0 ]
then
echo "$1 出错了。"
exit 1
fi
}
f_exist()
{
d=`date +%F%T`
if [ -f $1 ]
then
mv $1 $1_$d
fi
}
## 设置主mysql配置
if ! grep '^server-id' /etc/my.cnf
then
if ! grep '^log-bin.*=.*' /etc/my.cnf
then
sed -i '/^[mysqld]$/alog-bin = aminglinux' /etc/my.cnf
fi
sed -i '/^log-bin.*/ainlog-ignore-db = mysql ' /etc/my.cnf
/etc/init.d/mysqld restart
check_ok "主上重启mysql"
## 登录mysql，授权用户、锁表以及show master status。
$mysqlc <<EOF
grant replication slave on *.* to 'repl'@$slave_ip identified by 'yourpassword';
flush tables with read lock;
EOF
$mysqlc -e "show master status" > /tmp/master.log
file=`tail -1 /tmp/master.log|awk '{print $1}'`
pos=`tail -1 /tmp/master.log|awk '{print $2}'`
## 创建在从上配置和操作的脚本
f_exist /tmp/slave.sh
cat > /tmp/slave.sh << EOF
#!/bin/bash
if ! grep '^server-id' /etc/my.cnf
then
sed -i '/^[mysqld]$/aserver-id = 1002' /etc/my.cnf
fi
/etc/init.d/mysqld restart
check_ok "从上重启mysql"
$mysqlc <<EOF
stop slave;
start slave;
EOF
EOF
## 创建传输slave.sh的expect脚本
f_exist /tmp/rs_slave.expect
cat > /tmp/rs_slave.expect <<EOF
#!/usr/bin/expect
set passwd "aminglinux"
spawn rsync -a /tmp/slave.sh root@$slave_ip:/tmp/slave.sh
expect {
"yes/no" { send "yes
"}
"password:" { send "$passwd
" }
}
expect eof
EOF
## 执行expect脚本
chmod +x /tmp/rs_slave.expect
/tmp/rs_slave.expect
check_ok "传输slave.sh"
## 创建远程执行命令的expect脚本
f_exist /tmp/exe.expect
cat > /tmp/exe.expect <<EOF
#!/usr/bin/expect
set passwd "aminglinux"
spawn ssh root@$slave_ip
expect {
"yes/no" { send "yes
"}
"password:" { send "$passwd
" }
}
expect "]*"
send "/bin/bash /tmp/slave.sh
"
expect "]*"
send "exit
"
EOF
## 执行expect脚本
chmod +x /tmp/exe.expect
/tmp/exe.expect
check_ok "远程执行slave.sh"
## 主上解锁表
$mysqlc -e "unlock tables"
管理docker
[root@centos-04 tmp]# vim 92.sh
#!/bin/bash
#这个脚本用来管理docker容器
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-17
while true
do
read -p "请输入你要执行的操作：(stop/start/rm) " opt
if [ -z "$opt" ]
then
echo "请输入要执行的操作。"
continue
else
break
fi
done
docker ps -a |awk '{print $1}' > /tmp/id.txt
case $opt in
stop)
for id in `cat /tmp/id.txt`
do
docker stop $id
done
;;
start)
for id in `cat /tmp/id.txt`
do
docker start $id
done
rm)
for id in `cat /tmp/id.txt`
do
read -p "将要删除容器$id，是否继续？(y|n)" c
case $c in
y|Y)
docker rm -f $id
;;
n|N)
echo "容器$id不会被删除。"
;;
*)
echo "你只能输入'y'或者'n'。"
;;
esac
done
*)
echo "你只能输入start/stop/rm。"
;;
esac
安装配置samba
[root@centos-04 tmp]# vim 93.sh
#!/bin/bash
#这个脚本用来一键安装并配置samba
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-17
if [ "$#" -ne 1 ]
then
echo "运行脚本的格式为：$0 /dir/"
exit 1
else
if ! echo $1 |grep -q '^/.*'
then
echo "请提供一个绝对路径。"
exit 1
fi
fi
if ! rpm -q samba >/dev/null
then
echo "将要安装samba"
sleep 1
yum install -y samba
if [ $? -ne 0 ]
then
echo "samba安装失败"
exit 1
fi
fi
cnfdir="/etc/samba/smb.conf"
cat >> $cnfdir <<EOF
[share]
comment = share all
path = $1
browseable = yes
public = yes
writable = no
EOF
if [ ! -d $1 ]
then
mkdir -p $1
fi
chmod 777 $1
echo "test" > $1/test.txt
#假设系统为CentOS7
systemctl start smb
if [ $? -ne 0 ]
then
echo "samba服务启动失败，请检查配置文件是否正确。"
else
echo "samba配置完毕，请验证。"
fi
批量查看多台机器负载
指定文件名字（aaa）的秘钥
[root@centos-04 tmp]# ssh-keygen -f /tmp/aaa Generating public/private rsa key pair. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /tmp/aaa. Your public key has been saved in /tmp/aaa.pub. The key fingerprint is: SHA256:1P7xXAJP++vRPNHXETWP/3LZDHJRHVHdxoNUewrA868 root@centos-04 The key's randomart image is: +---[RSA 2048]----+ | .. ..oB%| | .o. . +@| | . .oo +++| | . . .= ==| | S . o.B.*| | . *.BB| | ..++O| | E o+| | .o | +----[SHA256]-----+ [root@centos-04 tmp]# ls 1.expect 3191.txt 6542.txt 6569.txt 66.sh 68.sh 71.sh 76.sh 80.sh 86.sh 93.sh nginx_proxy_tmp 1.txt 3.txt 6564.txt 6598.txt 67.sh 6969.txt 72.sh 7772.txt 81.sh 87.sh aaa on_sev.txt 2.txt 456.log 6565.txt 65.sh 6835.txt 69.sh 73.sh 77.sh 83.sh 88.sh aaa.pub pid.txt 3161.txt 4.txt 6567.txt 6606.txt 6836.txt 7046.txt 74.sh 78.sh 84.sh 91.sh c.txt proxy.log 3184.txt 64.sh 6568.txt 6610.txt 6838.txt 70.sh 75.sh 79.sh 85.sh 92.sh md5.txt [root@centos-04 tmp]# cat aaa（私钥） -----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: AES-128-CBC,6471B3E0E269F92672EABB4201EC8314 PF7gcBUGljlSYCX1IazbSPaqRkqA3M5BuDiBe9YkUFXiTTWOcx1eo0aus/GGK4P1 kb1wJEoa7kVjSlB6h0Ed9d2oB08faRKj6yzLGdpQp4I+ZKQMYsXii+QhDT3R0c2c c9zImVq5Jub6DZtYP7LTs7k2A7Sb1GIio+S3cEEZ1hun84HriFWfViiLKD43crDb jHTuHv7f4V+J85XHjljB+k7DgZxGx7N+F+/DNjacR/AXP48rq5SD3DWRk0IOmS9T Iihf7v6euKG3SlKeqRCuJbseeCDVIRNcOuMzrHCzYdj2zAOfNTYNtB9MdEa3rucT Cg4xaMyJDwDMtGCI/swQ/vTDV/Of/nOC359HHFdFOEdurXULH3nPsU1/qfElLpYe ims5JYnA5cfvo75iMQowzYHv+VZaKl7lUYldfE5z/n/tgcd5O8HxnzEm1pV1SC6L dkNM2bjMxlIcpW+nZGLztcF9A5MUy4lRTcjYhgjqTM9LPMpDA1rnQ9FajxQoP1IU hYsGYCjbjkvy41xtmDH2EgaIoZBI+VDmE6EKlgh4E2H0xROvg1bgYjauF2m2ZVrS A8tSy7/ox6JB6imUoc8taxGAUP9Cr8Nbe3l7iFkAtqeW+MSFZ7ho53iupUFirmYO TwDzro9A1z8n4lMc0hn+ZMhVnhSGwr8N+ON7U4puBVRwoM3jyH7HlTbWxsGlDGqG 4A19p8SgJKStfbDSgIICvGE7hPeegpEMeo/syWXAKj8jNBGmvKg5dG4rPMPGKecI YTETnYO0Q5a5YyEw8gXu16R7Zbs9YYYbq+pKTQjQC5AeW+kokl416/qG1oF7Yizi /JZ6lVBTLw3z96/xvd6VW0ZpVCshGL1iZr1k3R4mmO+brNyuCgKjzaS6iOCIc4Xz doZdEEJsJqiEDbo1lzMc5cZGhNVVdcGiN0BmnaoYWl4OtMX00vAz/ECTyiZt+en+ y1sLR/RpCVzSGACLYwgPHJY/2FQWAN6RDhmQQcCQTWPo7SZdY6j2lM3fmG1MV6Lc Phb/xUXwm/zsCqSr6Lb0RPL36C/UPBJKz2i8do/xADEaqSardV+WIHWIkz1bSdVo JRPmW517m/SgzCI74jZ8mW7//DdQ0ciXUd+23DRGcDW+2TqC78vxZmfr7FdzUTZZ RgVX9TC8XnCxUA4ZiMOpaLdzHDfjllAul3ns6sB/UNQ0ckVX61Wsb81WFoj0VLuN F5wS4sS3NTYhZ5qqkI0eejkiNraSPtYWd0JTNYuKYPXhiJn3beW3XuWy3AdPannD Pw0y1RXcwKd79ls+/OvFV/UvWRrSEzwh5qsNZE7gfo9JzHCNaOuHUvLcsrh50I1P 1hEnMYCpfCPCJBNd0d7JE0bNICTPE6W/7uypxp3POkfi2dqICEhjMUAJ77rhx3ub X2/Y6NCkZqHfpV8aE1wHKCVHrb5Fj/KP3FZ9xt0eojcp196ZSvNhfO5wrJafRHaE u56tHnYbtAeKwVp+6NUiv00RjIrsYLtwgAID8OSmL02+E1QlemnU61BrbEXFDUcM LHjNvSSyG+h98+S5NF7RpXK8DjF6mI+T6u3pVNdjPpZwzXgxiZAsRs8Ss9rld5eD -----END RSA PRIVATE KEY----- [root@centos-04 tmp]# cat aaa.pub （公钥） ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDWPuKc4lKJzZ+Zunq2RTi7IUP2FkhzZ7fXfH0lUvzom9+3wsarU1cCC5UU1JibgmhuU68
/yTlj/ZAHa80Sgdyxn2/ZBJFMJcIKyHk5XyZJhhfdLvEB1QORHBYn0rcbPkqpCJcciZLNx1N0soSRVHgOIVimFa1eIAa8zDBjvEXTtl7coL
MlxzMIj+DOvoDTy7gq+VlPcpk9hnY+AA4TtxEUZ+btc+ZnaaFGxjPkOxiSRp4nOHwtagJrJ4YQYNhfoAuOqNzFQOfoTw2HnCuJF4uM0kjDY
0Anm9CjQkbWwH4zSinvLeU4fG4POLDqLwbZX7YLDPlGVFShRNZJtiPyoQNv root@centos-04 [root@centos-04 tmp]#
由于我们在脚本中输入密码不合适，除了用expect我们还可以用ssh-agent命令把密码放到内存里，现在我们在本机登录本机，出现让我们输入密码，这说明我们的秘钥没有生效
[root@centos-04 tmp]# ssh -i /tmp/aaa root@127.0.0.1 root@127.0.0.1's password:
我们将公钥写到authorized_keys文件里
[root@centos-04 tmp]# cat aaa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDWPuKc4lKJzZ+Zunq2RTi7IUP2FkhzZ7fXfH0lUvzom9+
3wsarU1cCC5UU1JibgmhuU68/yTlj/ZAHa80Sgdyxn2/ZBJFMJcIKyHk5XyZJhhfdLvEB1QORHBYn0rcbPk
qpCJcciZLNx1N0soSRVHgOIVimFa1eIAa8zDBjvEXTtl7coLMlxzMIj+DOvoDTy7gq+VlPcpk9hnY+AA4Tt
xEUZ+btc+ZnaaFGxjPkOxiSRp4nOHwtagJrJ4YQYNhfoAuOqNzFQOfoTw2HnCuJF4uM0kjDY0Anm9CjQkbW
wH4zSinvLeU4fG4POLDqLwbZX7YLDPlGVFShRNZJtiPyoQNv root@centos-04 [root@centos-04 tmp]# vim /root/.ssh/authorized_keys ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDWPuKc4lKJzZ+Zunq2RTi7IUP2FkhzZ7fXfH0lUvzom9+3
wsarU1cCC5UU1JibgmhuU68/yTlj/ZAHa80Sgdyxn2/ZBJFMJcIKyHk5XyZJhhfdLvEB1QORHBYn0rcbPkqp
CJcciZLNx1N0soSRVHgOIVimFa1eIAa8zDBjvEXTtl7coLMlxzMIj+DOvoDTy7gq+VlPcpk9hnY+AA4TtxEU
Z+btc+ZnaaFGxjPkOxiSRp4nOHwtagJrJ4YQYNhfoAuOqNzFQOfoTw2HnCuJF4uM0kjDY0Anm9CjQkbWwH4z
SinvLeU4fG4POLDqLwbZX7YLDPlGVFShRNZJtiPyoQNv root@centos-04
再次测试让我们输入公钥的密码，输入之后即登录成功
[root@centos-04 tmp]# ssh -i /tmp/aaa root@127.0.0.1 Enter passphrase for key '/tmp/aaa': Last login: Wed Apr 17 18:22:40 2019 from 192.168.242.1 [root@centos-04 ~]#
ssh-agent可以将私钥放到内存里去，执行ssh-agent命令后再执行命令结果中的前两行。
[root@centos-04 ~]# ssh-agent SSH_AUTH_SOCK=/tmp/ssh-ZhiIYiItxeaK/agent.8521; export SSH_AUTH_SOCK; SSH_AGENT_PID=8522; export SSH_AGENT_PID; echo Agent pid 8522; [root@centos-04 ~]# SSH_AUTH_SOCK=/tmp/ssh-ZhiIYiItxeaK/agent.8521; export SSH_AUTH_SOCK; [root@centos-04 ~]# SSH_AGENT_PID=8522; export SSH_AGENT_PID; [root@centos-04 ~]#
这样就有了一个秘钥代理，我们把私钥加进去
[root@centos-04 ~]# ssh-add /tmp/aaa Enter passphrase for /tmp/aaa: Identity added: /tmp/aaa (/tmp/aaa) [root@centos-04 ~]#
我们再次登录发现不需要密码直接登录成功了
[root@centos-04 ~]# ssh -i /tmp/aaa root@127.0.0.1 Last login: Thu Apr 18 01:43:51 2019 from localhost [root@centos-04 ~]#
[root@centos-04 ~]# ps aux|grep ssh-agent root 8522 0.0 0.0 72312 1228 ? Ss 01:46 0:00 ssh-agent root 8579 0.0 0.0 112724 984 pts/2 S+ 01:53 0:00 grep --color=auto ssh-agent [root@centos-04 ~]# killall ssh-agent [root@centos-04 ~]# ps aux|grep ssh-agent root 8582 0.0 0.0 112724 988 pts/2 R+ 01:53 0:00 grep --color=auto ssh-agent [root@centos-04 ~]#
eval直接执行命令，用ssh-agent > 的方式再执行ssh-add 不能成功，因为这样执行不在一个终端里ssh-add执行失败。
[root@centos-04 ~]# eval echo 123 123
[root@centos-04 ~]# ssh-agent > /tmp/123.sh [root@centos-04 ~]# sh /tmp/123.sh Agent pid 8588 [root@centos-04 ~]#
[root@centos-04 ~]# ssh-add /tmp/aaa Could not open a connection to your authentication agent. [root@centos-04 ~]#
[root@centos-04 ~]# killall ssh-agent [root@centos-04 ~]# ps aux|grep ssh-agent root 8615 0.0 0.0 112724 988 pts/2 R+ 02:00 0:00 grep --color=auto ssh-agent [root@centos-04 ~]#
但是我们用eval可以
[root@centos-04 ~]# eval `ssh-agent` Agent pid 8651 [root@centos-04 ~]# !ps ps aux|grep ssh-agent root 8651 0.0 0.0 72312 776 ? Ss 02:02 0:00 ssh-agent root 8653 0.0 0.0 112724 988 pts/2 R+ 02:02 0:00 grep --color=auto ssh-agent [root@centos-04 ~]# ssh-add /tmp/aaa Enter passphrase for /tmp/aaa: Identity added: /tmp/aaa (/tmp/aaa) [root@centos-04 ~]#
[root@centos-04 ~]# ssh -i /tmp/aaa root@127.0.0.1 Last login: Thu Apr 18 01:50:32 2019 from localhost [root@centos-04 ~]#
[root@centos-04 ~]# killall ssh-agent [root@centos-04 ~]# eval `ssh-agent`; ssh-add /tmp/aaa Agent pid 8686 Enter passphrase for /tmp/aaa: Identity added: /tmp/aaa (/tmp/aaa) [root@centos-04 ~]#
给命令起个别名
[root@centos-04 ~]# alias ak='eval `ssh-agent`; ssh-add /tmp/aaa' [root@centos-04 ~]# !kill killall ssh-agent [root@centos-04 ~]# ak Agent pid 8691 Enter passphrase for /tmp/aaa: Bad passphrase, try again for /tmp/aaa: Identity added: /tmp/aaa (/tmp/aaa) [root@centos-04 ~]#
[root@centos-04 tmp]# vim 94.sh
#!/bin/bash
#这个脚本用来批量查机器负载
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-17
for ip in `cat /tmp/ip.list`
do
echo $ip
ssh $ip "uptime"
done
自动挂云盘
[root@centos-04 tmp]# vim 95.sh
#!/bin/bash
#这个脚本用来自动挂载磁盘
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-17
if [ $# -ne 2 ]
then
echo "Useage $0 盘符 挂载点, 如： $0 /dev/xvdb /data"
exit 1
fi
if [ ! -b $1 ]
then
echo "你提供的盘符不正确，请检查后再操作"
exit 1
fi
echo "格式化$1"
mkfs -t ext4 $1
if [ ! -d $2 ] ;then
mkdir -p $2
fi
n=`awk '$NF == "$2"' /etc/fstab|wc -l`
if [ $n -eq 0 ]
then
echo "$1 $2 ext4 defaults 0 0" >> /etc/fstab
mount -a
else
echo "配置文件/etc/fstab中已经存在挂载点$2,请检查一下."
exit 1
fi
并发备份数据库
[root@centos-04 tmp]# screen [root@centos-04 tmp]# mkfifo 123.fifo [root@centos-04 tmp]# echo "123" > 123.fifo ctrl+a d [root@centos-04 tmp]# cat 123.fifo 123 [root@centos-04 tmp]# screen -r
[root@centos-04 ~]# mkfifo test10.fifo
[root@centos-04 ~]# exec 10<>test10.fifo
[root@centos-04 ~]# ls -l /dev/fd/10
lrwx------ 1 root root 64 4月 18 19:00 /dev/fd/10 -> /root/test10.fifo
[root@centos-04 ~]# read -u10 b
[root@centos-04 ~]# ls -l /dev/fd/（查看是否有fifo）
总用量 0
lrwx------ 1 root root 64 4月 18 19:09 0 -> /dev/pts/0
lrwx------ 1 root root 64 4月 18 19:09 1 -> /dev/pts/0
lrwx------ 1 root root 64 4月 18 19:09 10 -> /root/test10.fifo
lrwx------ 1 root root 64 4月 18 19:09 2 -> /dev/pts/0
lr-x------ 1 root root 64 4月 18 19:09 3 -> /proc/11917/fd
[root@centos-04 ~]#
如果没有，需要执行
[root@centos-04 ~]# exec 10<> test10.fifo [root@centos-04 ~]#
[root@centos-04 ~]# echo "3333" >&10 [root@centos-04 ~]#
screen -r
[root@centos-04 ~]# echo $b 3333
总结：第一步需要将10描述符和test10.fifo命名管道绑定到一起，然后用read命令向10要一个字符串赋值给a，如果有将直接输出，如果没有处于等待状态，我们需要用echo “123” >&10（在终端）将123写入，这样a就有值了也就是123，在screen里echo $a就输出123了。
[root@centos-04 tmp]# vim 96.sh
#!/bin/bash
#这个脚本用来并发备份数据库
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
##假设100个库的库名、host、port以及配置文件路径存到了一个文件里，文件名字为/tmp/databases.list
##格式：db1 10.10.10.2 3308 /data/mysql/db1/my.cnf
##备份数据库使用xtrabackup（由于涉及到myisam，命令为inoobackupex）
exec &> /tmp/mysql_bak.log
if ! which innobackupex &>/dev/nll
then
echo "安装xtrabackup工具"
rpm -ivh http://www.percona.com/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpm &&
yum install -y percona-xtrabackup-24
if [ $? -ne 0 ]
then
echo "安装xtrabackup工具出错，请检查。"
exit 1
fi
fi
bakdir=/data/backup/mysql
bakuser=vyNctM
bakpass=99omeaBHh
function bak_data {
db_name=$1
db_host=$2
db_port=$3
cnf=$4
[ -d $bakdir/$db_name ] || mkdir -p $bakdir/$db_name
innobackupex --defaults-file=$4 --host=$2 --port=$3 --user=$bakuser --password=$bakpass $bakdir/$1
if [ $? -ne 0 ]
then
echo "备份数据库$1出现问题。"
fi
}
fifofile=/tmp/$$
mkfifo $fifofile
exec 1000<>$fifofile
thread=10
for ((i=0;i<$thread;i++))
do
echo >&1000
done
cat /tmp/databases.list | while read line
do
read -u1000
{
bak_data `echo $line`
echo >&1000
} &
done
wait
exec 1000>&-
rm -f $fifofile
打印三角形
[root@centos-04 tmp]# vim 97.sh
#!/bin/bash
#这个脚本用来打印三角形
#作者：SYJ
#日期：2019-04-18
#!/bin/bash
#这个脚本用来打印三角形
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
while true
do
read -p "please input the lenth: " n
if [ -z $n ]
then
echo "要输入一个数字。"
continue
else
n1=`echo $n|sed 's/[0-9]//g'`
if [ -n "$n1" ]
then
echo "你输入的不是纯数字，重新输入。"
continue
else
break
fi
fi
done
for i in `seq 1 $n`
do
j=$[$n-$i]
for m in `seq $j`
do
echo -n " "
done
for p in `seq 1 $i`
do
echo -n "* "
done
echo
done
[root@centos-04 tmp]# sh 97.sh
please input the lenth: 9
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * * * *
* * * * * * * * *
[root@centos-04 tmp]#
截取字符串
[root@centos-04 tmp]# vim 98.sh
#!/bin/bash
#这个脚本用来截取字符串
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
var=http://www.aaa.com/root/123.htm
echo "1.取出www.aaa.com/root/123.htm"
echo $var |awk -F '//' '{print $2}'
echo "2.取出123.htm"
echo $var |awk -F '/' '{print $5}'
echo "3.取出http://www.aaa.com/root"
echo $var |sed 's#/123.htm##'
echo "4.取出http:"
echo $var |awk -F '//' '{print $1}'
echo "5.取出http://"
echo $var |awk -F 'www' '{print $1}'
echo "6.取出root/123.htm"
echo $var |awk -F 'com/' '{print $2}'
echo $var |awk -F '/' '{print $4"/"$5}'
echo "7.取出123"
echo $var |sed 's/[^0-9]//g'
[root@centos-04 tmp]# sh 98.sh 1.取出www.aaa.com/root/123.htm www.aaa.com/root/123.htm 2.取出123.htm 123.htm 3.取出http://www.aaa.com/root http://www.aaa.com/root 4.取出http: http: 5.取出http:// http:// 6.取出root/123.htm root/123.htm root/123.htm 7.取出123 123 [root@centos-04 tmp]#
修改文本格式
[root@centos-04 tmp]# vim 99.sh
#!/bin/bash
#这个脚本用来格式化文本
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
n=`wc -l test3.txt|awk '{print $1}'`
n2=$[$n/2]
for i in `seq 1 $n2`
do
i2=$[$i*2]
j=$[$i2-1]
l1=`sed -n "$i2"p test3.txt`
l2=`sed -n "$j"p test3.txt`
echo $l2:$l1
done
自定义rm
[root@centos-04 tmp]# vim 100.sh
1. 简单
#!/bin/bash
#这个脚本用来自定义rm
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
filename=$1
big_filesystem=/data/
if [ ! -e $1 ]
then
echo "$1 不存在，请使用绝对路径"
exit
fi
d=`date +%Y%m%d%H%M`
read -p "Are U sure delete the file or directory $1? y|n: " c
case $c in
y|Y)
mkdir -p $big_filesystem/.$d && rsync -aR $1 $big_filesystem/.$d/$1 && /bin/rm -rf $1
;;
n|N)
exit 0
;;
*)
echo "Please input 'y' or 'n'."
;;
esac
2.复杂
#!/bin/bash
#这个脚本用来自定义rm
#作者：猿课-阿铭 www.apelearn.com
#日期：2018-12-19
#!/bin/bash
filename=$1
if [ ! -e $1 ]
then
echo "$1 不存在，请使用绝对路径"
exit
fi
d=`date +%Y%m%d%H%M`
f_size=`du -sk $1|awk '{print $1}'`
disk_size=`LANG=en; df -k |grep -vi filesystem|awk '{print $4}' |sort -n |tail -n1`
big_filesystem=`LANG=en; df -k |grep -vi filesystem |sort -n -k4 |tail -n1 |awk '{print $NF}'`
if [ $f_size -lt $disk_size ]
then
read -p "Are U sure delete the file or directory: $1? y|n: " c
case $c in
y|Y)
mkdir -p $big_filesystem/.$d && rsync -aR $1 $big_filesystem/.$d/$1 && /bin/rm -rf $1
;;
n|N)
exit 0
;;
*)
echo "Please input 'y' or 'n'."
;;
esac
else
echo "The disk size is not enough to backup the files $1."
read -p "Do you want to delete $1? y|n: " c
case $c in
y|Y)
echo "It will delete $1 after 5 seconds whitout backup."
for i in `seq 1 5`; do echo -ne ". "; sleep 1;done
echo
/bin/rm -rf $1
;;
n|N)
echo "It will not delete $1."
exit 0
;;
*)
echo "Please input 'y' or 'n'."
;;
esac
fi