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Using `wget` and `curl` to Download Files from the Internet
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Mastering File Downloads in Linux: Using wget and curl
In the world of Linux, downloading files from the internet is a frequent task whether you're a software developer, system administrator, or just a regular Linux user. There are several command-line tools at your disposal to make this job easier, but the most popular among them are wget and curl. In this guide, we'll explore how to use these tools to download files and also make sure they are installed on your system using different package managers such as apt, dnf, and zypper.
Ensuring wget and curl are Installed
Before diving into how to use wget and curl, let's make sure these tools are installed on your system. The installation method depends on the Linux distribution you are using.
Debian/Ubuntu Systems
On Debian-based systems (like Ubuntu), you generally use apt:
sudo apt update
sudo apt install wget curl
Fedora Systems
For Fedora (which uses dnf):
sudo dnf install wget curl
openSUSE Systems
On openSUSE, use zypper:
sudo zypper install wget curl
Confirm the installations by running wget --version and curl --version in your terminal.
Using wget to Download Files
wget is a non-interactive network downloader that supports HTTP, HTTPS, and FTP protocols. It is well-loved for its simplicity and robustness. Here’s how you can use it:
Basic Download
To download a file using wget, simply use the following command:
wget [URL]
Where [URL] is the link to the file you wish to download.
Downloading in the Background
If you want to continue using your terminal while downloading a large file, you can run wget in the background:
wget -b [URL]
Downloading to a Specific Directory
To download a file to a specific directory, use the -P option:
wget -P /path/to/directory [URL]
Resuming a Download
If your download gets interrupted, you can resume it using the -c option:
wget -c [URL]
Using curl to Download Files
curl is another powerful tool used for transferring data with URLs. Unlike wget, curl is designed to work without user interaction.
Basic Download
With curl, the syntax to download a file is:
curl -O [URL]
The -O option tells curl to save the file with the same name as in the URL.
Saving with a Different Name
If you want to save the file under a different name, use the -o option followed by the desired file name:
curl -o newfilename [URL]
Making Silent Downloads
If you do not want curl to show any output on the terminal, use the -s option:
curl -s -O [URL]
Conclusion
Both wget and curl are mighty tools that help you efficiently manage downloads on Linux. Whether choosing one over the other depends on personal preference or specific details of the task at hand. For simple, straightforward downloads wget can be ideal, whereas curl provides more flexibility, especially where multiple forms of data transfer protocol are concerned.
By understanding these tools and learning to use them effectively, you can streamline your workflows and handle data across the internet with ease and precision.
Further Reading
For further reading on using wget and curl, consider these resources:
GNU Wget 1.20 Manual: Comprehensive guide on
wget, covering everything from basic usage to advanced features. https://www.gnu.org/software/wget/manual/wget.htmlcurl - Command Line Tool and Library for Transferring Data with URLs: A detailed documentation site for
curlwhich includes examples and protocol details. https://curl.se/docs/Comparing
wgetandcurl: Practical Examples and Tips : This provides a side-by-side comparison ofwgetandcurlshowcasing practical usage scenarios. https://www.baeldung.com/linux/wget-curl-differencesAdvanced Web Scraping: Using
curlandwgetfor Powerful Data Retrieval: Explores advanced techniques in using these tools for web scraping and data extraction. https://linuxize.com/post/wget-command-examples/Automating Downloads with
wgetandcurl: Guide on automating repetitive download tasks using scripts combined withwgetandcurl. https://www.tecmint.com/30-useful-linux-commands-for-system-administrators/
These articles and documentation pages will help you dive deeper into mastering wget and curl tools for various file downloading and handling scenarios.