Bash shell脚本练习（五）

network

　　1.监控apache服务状态
　　

• #!/bin/bash
  
• 
  
• . /etc/init.d/functions
  
• HTTPPRONUM=`ps -ef | grep http | grep -v grep | wc -l`
  
• 
  
• if [ $HTTPPRONUM -lt 1 ]; then
  
•         action "httpd is not runing" /bin/false
  
•         action "httpd is not runing" /bin/false > /tmp/httpd.log
  
•         apachectl restart > /dev/null 2>&1
  
•          action "httpd is restart" /bin/true
  
•         mail -s &quot;`uname -n`'s httpd restarted at `(date)`&quot; root@example.com < /tmp/httpd.log
  
•         exit 1
  
• else
  
•         action &quot;httpd is runing&quot; /bin/true
  
•         exit 0
  
• fi
  

　　

2.每10分钟检测一次/usr目录是否超过5G　　

• #!/bin/bash
  
• while true
  
• do
  
•         sleep 600
  
•         n=$(du -s /usr | cut -f 1)
  
• 
  
•         if [ $n -gt 5242880 ]; then
  
•                 echo &quot;/usr目录大于5G&quot; | mail -s &quot;warning&quot; root@example.com
  
•         fi
  
• done
  

　　

3.处理文本，要求合并文件后的输出以下结果：
400 ashok sharma $1,250
100 jason smith  $5,000
200 john doe  $500
300 sanjay gupta  $3,000
[root@shell ~]# cat employee.txt
100 Jason Smith
200 John Doe
300 Sanjay Gupta
400 Ashok Sharma
[root@shell ~]# cat bonus.txt
100 $5,000
200 $500
300 $3,000
400 $1,250
[root@shell ~]# paste employee.txt bonus.txt | awk '{print $1,$2,$3,$5}'|tr '[A-Z]' '[a-z]' | sort -k 2
400 ashok sharma $1,250
100 jason smith $5,000
200 john doe $500
300 sanjay gupta $3,000