Linux curl command examples

Hey everyone! I recently discovered transfer.sh and it's completely changed how I share files quickly from my Linux machine. If you're like me, always looking for a fast, command-line way to send files without setting up a full server, then transfer.sh combined with curl is an absolute lifesaver. I used to struggle with finding a simple method, but this combo is incredibly efficient for "data and file uploads." Let me walk you through how I use curl to upload files to transfer.sh. It’s surprisingly straightforward. The basic command I start with is: curl --upload-file /path/to/your/file.txt https://transfer.sh/your/file.txt This command is super intuitive! You just replace /path/to/your/file.txt with the actual path to the file you want to upload. The https://transfer.sh/your/file.txt part is where transfer.sh gives your file a unique name, or you can let it auto-generate one by just using https://transfer.sh. After running this, curl will spit out a URL directly in your terminal – that’s your download link! I've found it incredibly handy for sending logs or config files to colleagues. Sometimes, I want to keep the original filename for clarity. In that case, I'd use: curl -T mydocument.pdf https://transfer.sh/mydocument.pdf Or, if you just want transfer.sh to handle the naming, which is often what I do: curl -T mydocument.pdf https://transfer.sh It's so clean! The transfer.sh service is smart enough to use the filename from your upload. Beyond just transfer.sh, understanding curl's capabilities for "HTTP POST/PUT operations" has been a revelation for my development workflow. For instance, when I need to send JSON data to an API endpoint, I usually do something like this: curl -X POST -H "Content-Type: application/json" -d '{"key": "value"}' https://api.example.com/data This is great for testing APIs or automating tasks where I need to send specific data payloads. The -X POST explicitly sets the HTTP method, and -d lets me specify the data. I've also used -H to add "custom headers" when an API requires authentication tokens or specific content types. This flexibility makes curl an indispensable tool. Another scenario where curl shines is with "file download operations." I often use it to grab large dataset files or software packages. For example, if a download gets interrupted, I know curl can handle "resuming" the download with the -C - option, which saves so much time! curl -C - -O https://example.com/largefile.zip The -O option saves the file with its original name. And for when I'm on a slower connection or don't want to hog bandwidth, I can even set a "rate-limiting" option using --limit-rate. Say, I only want to download at 100KB/s: curl --limit-rate 100K -O https://example.com/another_largefile.iso These little tricks make working with curl so powerful and efficient. It's not just for simple GET requests; it's a full-fledged network utility for data and file uploads and downloads. I hope these examples help you simplify your command-line tasks just as they've helped me!