wget 命令引數使用方法

wget 命令引數用法：
-P 指定下載檔案的存放目錄 /dir
-O 指定下載檔案的名字，重新命名 /dir/file
-o 螢幕輸出資訊儲存到紀錄檔中；相當於  > /dir/logfile
-a 螢幕輸出資訊追加到紀錄檔中；相當於 >> /dir/logfile
-S 螢幕輸出伺服器響應頭資訊；

試驗如下：
1、不指定任何引數，下載檔案到當前目錄；
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 下載檔案到指定目錄
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]

檔案儲存在/tmp/Resume.pdf

3、-o 把螢幕輸出資訊儲存到一個檔案中；檔案還會下載到當前目錄下；
[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]

紀錄檔檔案儲存在/tmp/a.log

4、-O 指定檔案存放目錄並改名
[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]

檔案儲存在/tmp/a.pdf

5、-S 輸出伺服器響應頭詳細資訊
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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本文永久更新連結地址：http://www.linuxidc.com/Linux/2017-03/142336.htm