wget 命令參數(shù)用法：

-P 指定下載文件的存放目錄 /dir

-O 指定下載文件的名字，重命名 /dir/file

-o 屏幕輸出信息保存到日志中；相當(dāng)于? > /dir/logfile

-a 屏幕輸出信息追加到日志中；相當(dāng)于 >> /dir/logfile

-S 屏幕輸出服務(wù)器響應(yīng)頭信息；

試驗如下：

1、不指定任何參數(shù)，下載文件到當(dāng)前目錄；

12345678910 [root@fan ~]# wget http://linuxidc.com/Resume.pdf

--2017-03-10 09:11:03--? http://linuxidc.com/Resume.pdf

Resolving linuxidc.com... 121.42.161.135

Connecting to linuxidc.com|121.42.161.135|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 366990 (358K) [application/pdf]

Saving to: `Resume.pdf'

100%[=====================================================================>] 366,990? ? ? 365K/s? in 1.0s

2017-03-10 09:11:05 (365 KB/s) - `Resume.pdf' saved [366990/366990]

2、指定-P 下載文件到指定目錄

12345678910 [root@fan ~]# wget http://linuxidc.com/Resume.pdf -P /tmp/

--2017-03-10 09:11:17--? http://linuxidc.com/Resume.pdf

Resolving linuxidc.com... 121.42.161.135

Connecting to linuxidc.com|121.42.161.135|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 366990 (358K) [application/pdf]

Saving to: `/tmp/Resume.pdf'

100%[=====================================================================>] 366,990? ? ? 403K/s? in 0.9s

2017-03-10 09:11:18 (403 KB/s) - `/tmp/Resume.pdf' saved [366990/366990]

文件保存在/tmp/Resume.pdf

3、-o 把屏幕輸出信息保存到一個文件中；文件還會下載到當(dāng)前目錄下；

[root@huangxiaofan ~]# wget http://linuxidc.com/Resume.pdf -o /tmp/

wget: /tmp/: Is a directory

[root@fan ~]# wget http://linuxidc.com/Resume.pdf -o /tmp/a.log

[root@fan ~]# cat /tmp/a.log

--2017-03-10 09:11:37--? http://linuxidc.com/Resume.pdf

Resolving linuxidc.com... 121.42.161.135

Connecting to linuxidc.com|121.42.161.135|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 366990 (358K) [application/pdf]

Saving to: `Resume.pdf.1'

0K .......... .......... .......... .......... .......... 13%? 137K 2s

50K .......... .......... .......... .......... .......... 27%? 275K 1s

100K .......... .......... .......... .......... .......... 41% 8.01M 1s

150K .......... .......... .......... .......... .......... 55%? 281K 1s

200K .......... .......... .......... .......... .......... 69% 10.8M 0s

250K .......... .......... .......... .......... .......... 83%? 284K 0s

300K .......... .......... .......... .......... .......... 97% 11.7M 0s

350K ........? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 100% 11.1M=0.9s

2017-03-10 09:11:39 (391 KB/s) - `Resume.pdf.1' saved [366990/366990]

日志文件保存在/tmp/a.log

4、-O 指定文件存放目錄并改名

[root@fan ~]# wget? -O /tmp/a.pdf http://linuxidc.com/Resume.pdf

--2017-03-10 09:12:03--? http://linuxidc.com/Resume.pdf

Resolving linuxidc.com... 121.42.161.135

Connecting to linuxidc.com|121.42.161.135|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 366990 (358K) [application/pdf]

Saving to: `/tmp/a.pdf'

100%[=====================================================================>] 366,990? ? ? 390K/s? in 0.9s

2017-03-10 09:12:04 (390 KB/s) - `/tmp/a.pdf' saved [366990/366990]

文件保存在/tmp/a.pdf

5、-S 輸出服務(wù)器響應(yīng)頭詳細(xì)信息

12345678910111213141516171819 [root@fan ~]# wget http://linuxidc.com/Resume.pdf -S

--2017-03-10 09:37:36--? http://linuxidc.com/Resume.pdf

Resolving linuxidc.com... 121.42.161.135

Connecting to linuxidc.com|121.42.161.135|:80... connected.

HTTP request sent, awaiting response...

HTTP/1.1 200 OK

Server: nginx/1.8.0

Date: Fri, 10 Mar 2017 01:37:36 GMT

Content-Type: application/pdf

Content-Length: 366990

Last-Modified: Wed, 08 Mar 2017 13:23:37 GMT

Connection: keep-alive

ETag: "58c005d9-5998e"

Accept-Ranges: bytes

Length: 366990 (358K) [application/pdf]

Saving to: `Resume.pdf.2'

100%[=====================================================================>] 366,990? ? ? 186K/s? in 1.9s

2017-03-10 09:37:38 (186 KB/s) - `Resume.pdf.2' saved [366990/366990]

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