Wget command operation instance, wget command instance

Wget command operation instance, wget command instance

Wget download methods include:

Wget is a tool used to download files in Linux. It has many functions. The following section describes how to use the wget command, the features covered by 11 instances are comprehensive. If you are interested, you can check them.

Wget $ link

Wget $ link -- no-check

Wget in Linux is a tool for downloading files. It is used in the command line. By default, files are downloaded to the current working path. You can set the-P parameter to specify the file.

Usage example:

Download the Baidu homepage file ~ /Download directory

The output log clearly shows the file storage path in the red box.

Instance:

Instance 1: Download a single file

# Wget http://mirror.nbrc.ac.in/CentOS/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-DVD.iso

This command downloads the CentOS 7 ISO file to your current working directory.

Example 2: resumable multipart download

There are always some scenarios where the Internet is disconnected when we start to download a large file. In this case, we can use the '-C' option of the wget command to resume the download from the breakpoint.

# Wget-c http://mirror.nbrc.ac.in/centos/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-DVD.iso

Example 3: Background File Download

You can use the '-B' option in the wget command to download files in the background.

Linuxtechi @ localhost :~ $ Wget-B http://mirror.nbrc.ac.in/centos/7.0.1406/isos/x86_64/

CentOS-7.0-1406-x86_64-DVD.iso

Continuingin background, pid 4505.

Output will be written to 'wget-log '.

As we can see above, the download process is captured to the 'wget-log' file in the user's current directory.

Linuxtechi @ localhost :~ $ Tail-f wget-log

2300 K ................................ 0% 48.1K18h5m

2350 K ................................ 0% 53.7K18h9m

2400 K ................................ 0% 52.1K18h13m

2450 K ................................ 0% 58.3K18h14m

2500 K ................................ 0% 63.6K18h14m

2550 K ................................ 0% 63.4K18h13m

2600 K ................................ 0% 72.8K18h10m

2650 K ................................ 0% 59.8K18h11m

2700 K ................................ 0% 52.8K18h14m

2750 K ................................ 0% 58.4K18h15m

2800 K ................................ 0% 58.2K18h16m

2850 K ................................ 0% 52.2K18h20m

Instance 4: download speed limit

By default, the wget command tries to download files at full speed, but sometimes you may use Internet sharing. If you try to use wget to download large files, the network of other users will be slowed down. In this case, if you use the '-limit-rate' option to limit the download speed, you can avoid this situation.

# Wget -- limit-rate = 100 k http://mirror.nbrc.ac.in/centos/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-DVD.iso

In the preceding example, the download speed is limited to 100 kb.

Instance 5: Use the '-I' option to download multiple files.

If you want to use the wget command to download multiple files, you must first create a text file and add all URLs to the file.

# Cat download-list.txt

Url1

Url2

Url3

Url4

Now, run the following command:

# Wget-I download-list.txt

Instance 6: Increase the number of retries

You can use the '-tries' option to increase the number of retries. By default, the wget command retries 20 times until the download is successful.

This option is useful when an Internet connection problem occurs during the process of downloading a large file, because in that case, it increases the chance of downloading failure.

# Wget -- tries = 75 http://mirror.nbrc.ac.in/centos/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-DVD.iso

Instance 7: Use the-o option to redirect wget logs to files

We can use the '-O' option to redirect the log of the wget command to a log file.

# Wget-o download. log http://mirror.nbrc.ac.in/centos/7.0.1406/isos/x86_64/CentOS-7.0-1406-x86_64-DVD.iso

The preceding command creates the download. log file in the current directory.

Instance 8: Download the entire website for local viewing

# Wget -- mirror-p -- convert-links-P. /Local-Folder website-url

In view

-Mirror: Enable the option for images.

-P: Download all necessary files that correctly display the specified HTML page.

-Convert-links: After the download is complete, the link in the conversion document is used for local viewing.

-P. /Local-Folder: Save all files and directories to the specified directory.

Instance 9: file type rejected during download

When you are about to download the entire website, we can use the '-reobject' option to force wget not to download images.

# Wget -- reject = png Website-To-Be-Downloaded

Instance 10: Use wget-Q to set the download quota

We can use the '-Q' option to force the wget command to exit the download when the download size exceeds the specified size.

# Wget-Q10m-I download-list.txt

Note that the quota does not affect the download of a single file. So if you specify wget-Q10m, all contents of the ftp://wuarchive.wustl.edu/ls-lR.gz,ls-lR.gz will be downloaded. This is also true when downloading multiple URLs specified by the command line. However, it is worth using recursively or retrieving from an input file. Therefore, you can safely enter 'wget-Q10m-I download-list.txt 'and the download will exit when the quota is exceeded.

Instance 11: download files from password-protected websites

# Wget -- ftp-user = user-name -- ftp-password = password Download-URL

Another way to specify the user name and password is in the URL.

Any method exposes your password to those who run the "ps" command. To prevent passwords from being viewed, store them in. wgetrc or. netrc, and use "chmod" to set proper permissions to protect these files from being viewed by other users. If the password is really important, do not go away while they are still lying in the file. After Wget starts downloading, edit the file or delete it.

The above is an example of using the wget command of the Linux download tool. From these examples, we can know that the wget function is similar to the thunder function we usually use, supports speed limit and multiple downloads.