关于curl:curl-o-output-file

-o, –output <file>

惯例操作一：把一个申请的响应写入单个文件中

curl www.baidu.com –output “baidu.txt”
将会把百度首页的内容放入文件 baidu.txt，baidu.txt 在执行命令的当前目录生成。

惯例操作二：把多个申请的响应写入多个文件中(单个汇合变量)

curl -v https://ai.baidu.com/ai-doc/FACE/{6k37c1nva,Yk37c1o30} –output “file_#1abc.txt”
将会把两个接口 https://ai.baidu.com/ai-doc/FACE/Okg7edktq，https://ai.baidu.com/ai-doc/FACE/6k37c1nva 的内容别离存入 file_Okg7edktqabc.txt,file_Yk37c1o30abc.txt 文件中，大括号相当于汇合，外面的元素会替换掉指定的文件名中的 #1 字符。
留神：此命令在 linux 下执行 {} 须要本义，即 \{…..\}

惯例操作三：把多个申请的响应写入多个文件中(单个数组变量)

curl https://ai.baidu.com/ai-doc/FACE/Yk37c1o3[0-5] –output “b_#1.txt”
将会把六个接口：

1. https://ai.baidu.com/ai-doc/FACE/Yk37c1o30
2. https://ai.baidu.com/ai-doc/FACE/Yk37c1o32
3. https://ai.baidu.com/ai-doc/FACE/Yk37c1o33
4. https://ai.baidu.com/ai-doc/FACE/Yk37c1o34
5. https://ai.baidu.com/ai-doc/FACE/Yk37c1o35
6. https://ai.baidu.com/ai-doc/FACE/Yk37c1o36

的响应别离存入以下文件

1. b_0.txt
2. b_1.txt
3. b_2.txt
4. b_3.txt
5. b_4.txt
6. b_5.txt

惯例操作三：把多个申请的响应写入多个文件(多个汇合、多个数组变量)

curl http://{site,host}.baidu.{one,two}.host[1-5].sina[0-5].com -o “#1_#2_#3_#4”
请自行演示。

1. Write output to <file> instead of stdout.
2. If you are using {} or [] to fetch multiple documents, you can use ‘#’ followed by a number in the <file> specifier. That
   variable will be replaced with the current string for the URL being fetched. Like in:
   curl http://{one,two}.site.com -o “file_#1.txt”
   or use several variables like:
   curl http://{site,host}.host[1-5].com -o “#1_#2”
3. You may use this option as many times as the number of URLs you have.