How to install and use Wget command

  7 months ago     Views:  458  
Jitesh Meniya
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Wget is free and cross-platform command-line tool created by the GNU Project for downloading files from the web. It downloads files via protocols like FTP, SFTP, HTTP, and HTTPS. It supports multiple files downloading, downloading in the background, resuming downloads, recursive downloading, limiting the bandwidth for downloads and viewing headers. Wget is available to install in Linux, Unix and Windows system.

In this article, we will show you how to install and use the Wget command. We will also use some useful Wget command examples.

Install Wget

Wget tool comes pre-installed in most Linux distributions. You can check whether it is installed on your system, open Terminal or CMD, type wget and press enter. It will print bellow output.

hackthestuff@Lenovo-G50-70:~$ wget
wget: missing URL
Usage: wget [OPTION]... [URL]...
Try `wget --help' for more options.

If wget command is not installed in your system, you can easily install it directly from the command-line.

To install wget on Ubuntu or Debian, execute the following command:

sudo apt-get install wget

To install wget on Fedora or CentOS, use the bellow command:

sudo yum install wget

Download files via wget

The basic syntax to download files is as bellow:

wget [options] [url]

Where [options] are how you want to download the files and [url] is the remote file path.

There are many ways you can download files via wget. Here is some useful options you can use to download files over the internet.

Download single file

This is the basic wget command that is used most. For example, download latest Ubuntu 18.04 LTS ISO file using bellow command.

wget http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download file with different name

You can also download file with different name. Pass -O option in the command with new name. In the bellow example, file will be saved as ubuntu.iso.

wget -O ubuntu.iso http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download file to different folder

You can download file direct to other folder by passing -P option with directory path. In the bellow command file will be stored in Documents folder.

wget -P ~/Documents http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download multiple files

You can download multiple files at a once. For that, create new txt file and put all files link in that txt file. Here is my text document file which download multiple files at a once.

files.txt

http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso 
https://download.fedoraproject.org/pub/fedora/linux/releases/31/Workstation/x86_64/iso/Fedora-Workstation-Live-x86_64-31-1.9.iso

After text document created, you can use -i to get all the files stored in your text file: 

wget -i ~/Downloads/files.txt

Download resumable file

While downloading large files, it is important to download with resume.For that pass -c option to every time when resume the download.

wget -c http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download file in the background

You can also download the file in the background using -b option, so you can use Terminal while downloading.

wget -b http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

You can check current download progress in wget-log file of current directory.

nano wget-log

Download file with limit speed

Sometimes you also want to download file with limit speed. Pass --limit-rate option with maximum limit speed like this. In the bellow example, file will download with maximum speed of 100KB/S.

wget --limit-rate=100k http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download zip, tar file and extract to specified directory

You can also download tar or zip file and extract to specified directory. Run the bellow command to download tar file with extracted to specified folder

wget -q -O - https://website.com/path/file.tar.gz | tar -xzf - --strip 1 -C ~/Downloads/file

Download file with increase retry attempts

You can add retry attempts --tries

wget --tries=50 http://releases.ubuntu.com/18.04/ubuntu-18.04.4-desktop-amd64.iso

Download file over FTP

The Wget command can also use with FTP. You’ll only need to specify the username and password as in this wget example:

wget --ftp-user=USERNAME --ftp-password=PASSWORD ftp://website.com/path/file.zip

Download whole website

You can also download whole website in your local system. Use the bellow command to download the full website:

wget --mirror --convert-links --page-requisites --no-parent -P Downloads/website/ https://website.com

In the above command,

--mirror                download with recursive strategy
--convert-links         All links converts to offline
--page-requisites       download all files
-P                      Download content to specified directory

Download files over HTTPS site without checking SSL certificate

If you want to download the file over HTTPS without checking SSL certificate, run the bellow command. This is useful in case invalid certificate.

wget --no-check-certificate https://website.com/path/file.zip

Set your user agent

You can also set your User-Agent by self while downloading files. Pass -U option to add your User-Agent. It is useful in arbitrary string to be set for the user agent.

wget -U YOUR-USER_AGENT https://website.com/path/file.zip

View Response Header

To view response header of the file, pass -S --spider option along with command.

wget -S --spider https://www.google.com

Conclusion

This way, you can use Wget command-line tool for download files from the internet. There are many other tricks you can use. To get more details about Wget visit the GNU wget Manual page.

If you have any query, please do let us know in the bellow comment section. Also follow HacktheStuff on Twitter and like our Facebook page.


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