标签:erro proc grep -w 中心 sys count mysq put evel
#!/bin/bash
,用来告诉系统使用哪种Shell解释器来执行该脚本#
开头的行作为解释说明,系统不会执行.sh
结尾,用于区分这是一个shell脚本[root@localhost ~]# bash 01.sh
[root@localhost ~]# chmod a+x 01.sh
[root@localhost ~]# ./01.sh
[root@localhost ~]# bash -x 01.sh
[root@localhost ~]# bash -n 01.sh
日期
[root@localhost ~]# date +%Y-%m-%d
2018-10-24
[root@localhost ~]# date +%y-%m-%d
18-10-24
[root@localhost ~]# date +%D
10/24/18
[root@localhost ~]# date +%F
2018-10-24
[root@localhost ~]# date +%h
Oct
时间
[root@localhost ~]# date +%H:%M:%S
20:53:59
[root@localhost ~]# date +%T
20:54:05
时间戳
[root@localhost ~]# date +%s
1540428984
[root@localhost ~]# date +%s -d "2018-10-24 20:56:24"
1540428984
[root@localhost ~]# date -d @1540428984 +%T
20:56:24
定义日期时间
[root@localhost ~]# date -d "+1 day" +%F
2018-10-25
[root@localhost ~]# date -d "-1 day" +%F
2018-10-23
[root@localhost ~]# date -d "-1 month" +%F
2018-09-24
[root@localhost ~]# date -d "+1 month" +%F
2018-11-24
[root@localhost ~]# date -d "+1 hour" +%T
22:02:14
[root@localhost ~]# date -d "+1 min" +%T
21:03:21
日历
[root@localhost ~]# cal
October 2018
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
操作符 | 作用 |
---|---|
-eq | 是否等于 |
-ne | 是否不等于 |
-gt | 是否大于 |
-lt | 是否小于 |
-le | 是否等于或小于 |
-ge | 是否大于或等于 |
if条件判断语句
if [ $a -eq 5 ];then
echo yes
fi
输入变量a=5,结果 yes
输入变量a=4,结果 无
if [ $a -eq 5 ];then
echo yes
else
echo no
fi
输入变量a=5,结果 yes
输入变量a=4,结果 no
if [ $a -lt 5 ];then
echo small
elif [ $a -gt 5 ] && [ $a -lt 10 ] ;then
echo middle
else
echo large
fi
输入变量a=3,结果 small
输入变量a=6,结果 middle
输入变量a=11,结果 large
操作符 | 作用 |
---|---|
-d | 测试文件是否为目录类型 |
-e | 测试文件是否存在 |
-f | 判断是否为一般文件 |
-r | 测试当前用户是否有权限读取 |
-w | 测试当前用户是否有权限写入 |
-x | 测试当前用户是否有权限执行 |
操作符 | 作用 |
---|---|
= | 比较字符串内容是否相同 |
!= | 比较字符串内容是否不同 |
-z | 判断字符串内容是否为空 |
-n | 表示当变量或文件不为空 |
一条命令可以作为判断条件
if grep -wq ‘123‘ 1.txt; then
echo yes
fi
if (($a<1)); then …
等同于if [ $a -lt 1 ]; then…
[ ] 中不能使用<,>,==,!=,>=,<=这样的符号
格式
case 变量名 in
value1)
command
;;
value2)
command
;;
*)
commond
;;
esac
在case程序中,可以在条件中使用|,表示或的意思
2|3)
command
;;
案例
#!/bin/bash
read -p "Please input a number: " n
if [ -z "$n" ]
then
echo "Please input a number."
exit 1
fi
n1=`echo $n|sed ‘s/[0-9]//g‘`
if [ -n "$n1" ]
then
echo "Please input a number."
exit 1
fi
if [ $n -lt 60 ] && [ $n -ge 0 ]
then
tag=1
elif [ $n -ge 60 ] && [ $n -lt 80 ]
then
tag=2
elif [ $n -ge 80 ] && [ $n -lt 90 ]
then
tag=3
elif [ $n -ge 90 ] && [ $n -le 100 ]
then
tag=4
else
tag=0
fi
case $tag in
1)
echo "不及格"
;;
2)
echo "及格"
;;
3)
echo "良好"
;;
4)
echo "优秀"
;;
*)
echo "The number range is 0-100."
;;
esac
格式
for 变量名 in 条件
do
commond
done
案例1
#!/bin/bash
sum=0
for i in `seq 1 100`
do
sum=$[$sum+$i]
echo $i
done
echo $sum
案例2
#!/bin/bash
cd /etc/
for a in `ls /etc/`
do
if [ -d $a ]
then
ls -d $a
fi
done
格式
while 条件
do
commond
done
案例1
#!/bin/bash
while :
do
load=`w|head -1|awk -F ‘load average: ‘ ‘{print $2}‘|cut -d. -f1`
if [ $load -gt 10 ]
then
top|mail -s "load is high: $load" asldkfls@11.com
fi
sleep 30
done
案例2
#!/bin/bash
while :
do
read -p "Please input a number: " n
if [ -z "$n" ]
then
echo "you need input sth."
continue
fi
n1=`echo $n|sed ‘s/[0-9]//g‘`
if [ -n "$n1" ]
then
echo "you just only input numbers."
continue
fi
break
done
echo $n
#!/bin/bash
for i in `seq 1 5`
do
echo $i
if [ $i == 3 ]
then
break
fi
echo $i
done
echo aaaaaaa
忽略continue之下的代码,直接进行下一次循环
#!/bin/bash
for i in `seq 1 5`
do
echo $i
if [ $i == 3 ]
then
continue
fi
echo $i
done
echo $i
#!/bin/bash
for i in `seq 1 5`
do
echo $i
if [ $i == 3 ]
then
exit
fi
echo $i
done
echo aaaaaaa
扩展
select用法 http://www.apelearn.com/bbs/thread-7950-1-1.html
function f_name() {
command
}
示例1
#!/bin/bash
input() {
echo $1 $2 $# $0
}
input 1 a b
示例2
#!/bin/bash
sum() {
s=$[$1+$2]
echo $s
}
sum 1 2
示例3
#!/bin/bash
ip() {
ifconfig |grep -A1 "$1 " |tail -1 |awk ‘{print $2}‘|awk -F‘:‘ ‘{print $2}‘
}
read -p "Please input the eth name: " e
myip=`ip $e`
echo "$e address is $myip"
定义数组,显示数组
[root@localhost ~]# a=(1 2 3 4 5)
[root@localhost ~]# echo ${a[@]}
1 2 3 4 5
[root@localhost ~]# echo ${a[*]}
1 2 3 4 5
获取数组的元素个数
[root@localhost ~]# echo ${#a[@]}
5
读取某个元素,数组从0开始
[root@localhost ~]# echo ${a[2]}
3
[root@localhost ~]# echo ${a[0]}
1
数组赋值
[root@localhost ~]# a[1]=100
[root@localhost ~]# a[5]=100
[root@localhost ~]# echo ${a[@]}
1 100 3 4 5 100
数组删除
[root@localhost ~]# unset a[1]
[root@localhost ~]# echo ${a[@]}
1 3 4 5 100
[root@localhost ~]# unset a
[root@localhost ~]# echo ${a[@]}
数组分片
[root@localhost ~]# a=(`seq 1 5`)
[root@localhost ~]# echo ${a[@]:0:3} //从第一个元素开始,截取3个
1 2 3
[root@localhost ~]# echo ${a[@]:1:4} //从第二个元素开始,截取4个
2 3 4 5
[root@localhost ~]# echo ${a[@]:0-3:2} //从倒数第3个元素开始,截取2个
3 4
数组替换
[root@localhost ~]# echo ${a[@]/3/100}
1 2 100 4 5
[root@localhost ~]# a=(${a[@]/3/100})
1 2 100 4 5
[root@localhost ~]# cd /usr/local/sbin/mon/bin
[root@localhost bin]# vim main.sh
#!/bin/bash
#Written by aming.
# 是否发送邮件的开关
export send=1
# 过滤ip地址
export addr=`/sbin/ifconfig |grep -A1 "ens33: "|awk ‘/inet/ {print $2}‘`
dir=`pwd`
# 只需要最后一级目录名
last_dir=`echo $dir|awk -F‘/‘ ‘{print $NF}‘`
# 下面的判断目的是,保证执行脚本的时候,我们在bin目录里,不然监控脚本、邮件和日志很有可能找不到
if [ $last_dir == "bin" ] || [ $last_dir == "bin/" ]; then
conf_file="../conf/mon.conf"
else
echo "you shoud cd bin dir"
exit
fi
exec 1>>../log/mon.log 2>>../log/err.log
echo "`date +"%F %T"` load average"
/bin/bash ../shares/load.sh
#先检查配置文件中是否需要监控502
if grep -q ‘to_mon_502=1‘ $conf_file; then
export log=`grep ‘logfile=‘ $conf_file |awk -F ‘=‘ ‘{print $2}‘ |sed ‘s/ //g‘`
/bin/bash ../shares/502.sh
fi
[root@localhost ~]# cd /usr/local/sbin/mon/conf
[root@localhost conf]# vim mon.conf
## to config the options if to monitor
## 定义mysql的服务器地址、端口以及user、password
to_mon_cdb=0 ##0 or 1, default 0,0 not monitor, 1 monitor
db_ip=10.20.3.13
db_port=3315
db_user=username
db_pass=passwd
## httpd 如果是1则监控,为0不监控
to_mon_httpd=0
## php 如果是1则监控,为0不监控
to_mon_php_socket=0
## http_code_502 需要定义访问日志的路径
to_mon_502=1
logfile=/data/log/xxx.xxx.com/access.log
## request_count 定义日志路径以及域名
to_mon_request_count=0
req_log=/data/log/www.discuz.net/access.log
domainname=www.discuz.net
[root@localhost ~]# cd /usr/local/sbin/mon/shares
[root@localhost shares]# vim load.sh
#! /bin/bash
##Writen by aming##
load=`uptime |awk -F ‘average:‘ ‘{print $2}‘|cut -d‘,‘ -f1|sed ‘s/ //g‘ |cut -d. -f1`
if [ $load -gt 10 ] && [ $send -eq "1" ]
then
echo "$addr `date +%T` load is $load" >../log/load.tmp
/bin/bash ../mail/mail.sh aming_test@163.com "$addr\_load:$load" `cat ../log/load.tmp`
fi
echo "`date +%T` load is $load"
[root@localhost shares]# vim 502.sh
#! /bin/bash
d=`date -d "-1 min" +%H:%M`
c_502=`grep :$d: $log |grep ‘ 502 ‘|wc -l`
if [ $c_502 -gt 10 ] && [ $send == 1 ]; then
echo "$addr $d 502 count is $c_502">../log/502.tmp
/bin/bash ../mail/mail.sh $addr\_502 $c_502 ../log/502.tmp
fi
echo "`date +%T` 502 $c_502"
[root@localhost shares]# vim disk.sh
#! /bin/bash
##Writen by aming##
rm -f ../log/disk.tmp
for r in `df -h |awk -F ‘[ %]+‘ ‘{print $5}‘|grep -v Use`
do
if [ $r -gt 90 ] && [ $send -eq "1" ]
then
echo "$addr `date +%T` disk useage is $r" >>../log/disk.tmp
fi
if [ -f ../log/disk.tmp ]
then
df -h >> ../log/disk.tmp
/bin/bash ../mail/mail.sh $addr\_disk $r ../log/disk.tmp
echo "`date +%T` disk useage is nook"
else
echo "`date +%T` disk useage is ok"
fi
[root@localhost ~]# cd /usr/local/sbin/mon/mail
[root@localhost mail]# vim mail.sh
log=$1
t_s=`date +%s`
t_s2=`date -d "2 hours ago" +%s`
if [ ! -f /tmp/$log ]
then
echo $t_s2 > /tmp/$log
fi
t_s2=`tail -1 /tmp/$log|awk ‘{print $1}‘`
echo $t_s>>/tmp/$log
v=$[$t_s-$t_s2]
echo $v
if [ $v -gt 3600 ]
then
./mail.py $1 $2 $3
echo "0" > /tmp/$log.txt
else
if [ ! -f /tmp/$log.txt ]
then
echo "0" > /tmp/$log.txt
fi
nu=`cat /tmp/$log.txt`
nu2=$[$nu+1]
echo $nu2>/tmp/$log.txt
if [ $nu2 -gt 10 ]
then
./mail.py $1 "trouble continue 10 min $2" "$3"
echo "0" > /tmp/$log.txt
fi
fi
[root@localhost mail]# vim mail.py
#!/usr/bin/env python
#-*- coding: UTF-8 -*-
import os,sys
reload(sys)
sys.setdefaultencoding(‘utf8‘)
import getopt
import smtplib
from email.MIMEText import MIMEText
from email.MIMEMultipart import MIMEMultipart
from subprocess import *
def sendqqmail(username,password,mailfrom,mailto,subject,content):
gserver = ‘smtp.qq.com‘
gport = 25
try:
# msg = MIMEText(unicode(content).encode(‘utf-8‘)) //如果发送的邮件有乱码,可以尝试把这行改成如下:
msg = MIMEText(content,‘plan‘,‘utf-8‘)
msg[‘from‘] = mailfrom
msg[‘to‘] = mailto
msg[‘Reply-To‘] = mailfrom
msg[‘Subject‘] = subject
smtp = smtplib.SMTP(gserver, gport)
smtp.set_debuglevel(0)
smtp.ehlo()
smtp.login(username,password)
smtp.sendmail(mailfrom, mailto, msg.as_string())
smtp.close()
except Exception,err:
print "Send mail failed. Error: %s" % err
def main():
to=sys.argv[1]
subject=sys.argv[2]
content=sys.argv[3]
sendqqmail(‘1234567@qq.com‘,‘aaaaaaaaaa‘,‘1234567@qq.com‘,to,subject,content)
if __name__ == "__main__":
main()
[root@localhost ~]# crontab -e
1 * * * * cd /usr/local/sbin/mon/bin; bash main.sh
标签:erro proc grep -w 中心 sys count mysq put evel
原文地址:https://www.cnblogs.com/2KP2/p/9860359.html