Question

我有一个文本文件，其中包含IP地址 -

1.2.3.4
4.5.6.67
9.10.23.40
11.12.3.4
4.15.16.67
19.10.23.40

现在我需要阅读上面的文本文件，并为每个IP地址构造下面的sql字符串 - 正如您所看到的，只有IP地址部分正在发生变化，除此之外一切都是相同的。

insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '1.2.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.5.6.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '9.10.23.40', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '11.12.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.15.16.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '19.10.23.40', dateOf(now()), 'hello')

在shell脚本中执行此操作的最佳方法是什么？

更新： -

这是我试过的 -

#!/bin/bash
while read host rest; do
    # not sure what should I do here
  EOF
done < ipList.txt
wait

我无法理解在获取IP地址后如何创建sql字符串

Answer 1

首先，您的文件只包含一列，而您正在阅读两列（read host rest）。

第二，什么是dateOf（now（）），我的意思是，它是一个bash函数吗？

可能的解决方案如下：

while read ip; do
    echo "insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '$ip', dateOf(now()), 'hello')"
done < ipList.txt

如果dateOf(now())是bash函数，您可以将结果存储在变量中，然后以下列方式使用：

function dateOfNow() {
    echo -n $(date); # Just an example :)
}
while read ip; do
    d=$(dateOfNow)
    echo "insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '$ip', $d), 'hello')"
done < ipList.txt

示例输出：

insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '1.2.3.4', Wed Dec 17 15:05:55 CST 2014), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.5.6.67', Wed Dec 17 15:05:55 CST 2014), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '9.10.23.40', Wed Dec 17 15:05:55 CST 2014), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '11.12.3.4', Wed Dec 17 15:05:55 CST 2014), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.15.16.67', Wed Dec 17 15:05:55 CST 2014), 'hello')

Answer 2

尝试这样做：

$ while read ip; do printf "insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '%s', dateOf(now()), 'hello')\n" $ip; done < file
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '1.2.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.5.6.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '9.10.23.40', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '11.12.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.15.16.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '19.10.23.40', dateOf(now()), 'hello')

Answer 3

这个怎么样：

 cat  ipList.txt | xargs -n1 -I % echo  "insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '%', dateOf(now()), 'hello')"

输出：

insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '1.2.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.5.6.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '9.10.23.40', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '11.12.3.4', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '4.15.16.67', dateOf(now()), 'hello')
insert into some_table (id, ip_address, last_modified_date, customer_name) values (1, '19.10.23.40', dateOf(now()), 'hello')

如何通过从shell脚本中的文件读取ip地址来构造字符串？

3 个答案: