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If when using curl to view links, many times the output is minified (meaning all \n enters, and whitespace is stripped so the entire page is on one line), it can be daunting to look at. Here are some suggestions to deal with this:
- Install “tidy”: You can pipe this output to tidy, and it may make it readable.
- Install “pp”: Prettyprint can help format the output.
- Create an alias: Build your own alias to clean up and make readable this minified markup.
Step-by-Step Guide:
Step 1: Look for the most commonly used characters for delimiting. In the example, we see ,, ;, and for HTML >.
Step 2: Make a command with `tr` (translate) to insert `\n` on those characters.
Step 3: Try it:
curl "https://lnkd.in/dh9zPiX8<snip>&ddm=1" | tr ',.>' '\n'
Output:
<html lang="en" dir="ltr" <head <base href="https://accounts google com/v3/signin/" <link rel="preconnect" href="//www gstatic com"
Step 4: Make an alias for re-use:
alias tidy2='tr ",>;" "\n"'
Step 5: Repeat on the same URL using the alias:
curl "https://lnkd.in/dh9zPiX8<snip>&ddm=1" | tidy2
Output:
<a class="AVAq4d TrZEUc" href="https://support google com/accounts?hl=en&p=account_iph" target="_blank" Help</a </li <li class="qKvP1b" <a class="AVAq4d TrZEUc" href="https://accounts google com/TOS?loc=US&hl=en&privacy=true" target="_blank"
What Undercode Say:
In the realm of cybersecurity and IT, the ability to parse and interpret data efficiently is crucial. The use of `curl` to fetch web content is a common task, but dealing with minified output can be a headache. By leveraging tools like tidy, pp, and custom aliases with tr, you can significantly improve readability and streamline your workflow.
Here are some additional commands and tips to enhance your cybersecurity practices:
1. Using `jq` for JSON Parsing:
curl "https://api.example.com/data" | jq .
This command fetches JSON data and formats it for easier reading.
2. HTML Tidy:
curl "https://example.com" | tidy -indent -wrap 80
This command formats HTML content with proper indentation and line wrapping.
3. Pretty Printing XML:
curl "https://example.com/data.xml" | xmllint --format -
This command formats XML data for better readability.
4. Using `sed` for Advanced Text Manipulation:
curl "https://example.com" | sed 's/<[^>]*>//g'
This command removes all HTML tags from the output.
5. Combining Commands:
curl "https://example.com" | tidy -q -asxml | xmllint --format -
This combination of commands fetches, tidies, and formats XML content.
6. Windows Equivalent with PowerShell:
Invoke-WebRequest -Uri "https://example.com" | Select-Object -ExpandProperty Content
This PowerShell command fetches web content and displays it.
7. Using `awk` for Text Processing:
curl "https://example.com" | awk '{print}'
This command processes each line of the output.
8. Batch Script for Windows:
[batch]
curl “https://example.com” > output.txt
[/batch]
This batch script saves the output of a `curl` command to a file.
9. Using `grep` for Filtering:
curl "https://example.com" | grep "keyword"
This command filters the output to show only lines containing a specific keyword.
10. Using `cut` for Column Extraction:
curl "https://example.com" | cut -d',' -f1
This command extracts the first column from a CSV-like output.
By mastering these commands and techniques, you can enhance your ability to work with web data, making your cybersecurity tasks more efficient and effective. Whether you’re parsing HTML, JSON, or XML, these tools and commands will help you get the job done with precision and ease.
For further reading and advanced techniques, consider exploring the following resources:
– Curl Documentation
– Tidy HTML
– jq Manual
– Xmllint Documentation
Remember, the key to success in cybersecurity is continuous learning and practice. Keep experimenting with different tools and commands to find what works best for your specific needs.
References:
initially reported by: https://www.linkedin.com/posts/activity-7301729024106545152–bqK – Hackers Feeds
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