shell programming combat 15

1. Find the differences between two files

　

2. Kill a user process

　

3. concurrent backup database

#!/bin/bash N = 5 ## defined as the amount of concurrency. 5 MySQL = "mydb the mysqldump -uaming -ppasswd" MySQL -e $ "Show Tables;" | Sed '1D'> /tmp/table.list n-WC = `-l /tmp/table.list|awk '{}. 1 Print $'` number of tables ## div () { n-echo = `" = Scale. 1; $. 1/2 $ "| bc` ## divide two numbers n1 =` echo "scale = 1 ; $ n + 0.5" | bc` ## two numbers business plus 0.5 in addition to the echo $ N1 |. Cut -f1 -d  } n1 = `div $ n $ N` $ N files, the implementation of the true number of average number of lines per file, each file in the non- split -l $ n1 /tmp/tab.list -d -a 2 tablist Function ## define the backup of the database table for a division of the $ N tablist0? File in a database table to do a backup, ## per tablist0? File has about $ n1 database table mydump () { for t in `$ 1 CAT ` do the mysqldump -uaming -ppasswd mydb T $> $ t.sql DONE } for f in tablist01 tablist02 tablist03 tablist04 tablist05 do mydump $f & ## 针对$N个数据库表文件，同时并发做数据库表备份 done wait  #tar zcvf mydb.tar.gz *.sql &>/dev/null tar zcf mydb.tar.gz *.sql rm -f *.sql

 

 

4. 监控CDN节点

  　

 

 

5. 破解md5sum加密的数字

　 

6. 判断cpu厂商