[b]"What Are the Most Useful curl Command Line Options You Should Know?"[/b] Alternatively: [b]"How Can I Master cu

14 Replies, 964 Views

Title: What Are the Most Useful curl Command Line Options You Should Know?

Hey folks,

Just getting started with curl and kinda overwhelmed by all the curl command line options out there. Wondering which ones are actually worth memorizing?

Like, I know `-O` saves a file with its original name, and `-L` follows redirects (super handy). But what about stuff like `-H` for headers or `-d` for POST data? Are there any lesser-known ones that save time?

Also, how do y'all remember all these? My brain’s already full with other CLI junk lol.

Would love to hear your go-to curl command line options or any tricks to make web requests smoother.

Thanks in advance!
One of my fav curl command line options is `-v` for verbose mode. It’s a lifesaver when debugging requests because it shows headers, SSL handshake, and all the nitty-gritty details.

Also, `-A` to set a custom user-agent is clutch if you’re scraping or testing how a site responds to different browsers.

For remembering stuff, I just bookmark the curl man page (`man curl`) and cheat sheets like [curl.se/docs](https://curl.se/docs/). No way I’m memorizing all that lol.
If you’re working with APIs, `-H` for headers and `-d` for POST data are must-knows. But here’s a pro tip: `-F` for multipart form uploads is super useful if you’re dealing with file uploads.

And don’t sleep on `-k` (insecure mode) for testing HTTPS endpoints with self-signed certs. Just don’t use it in prod, obviously.

For practice, I use [httpbin.org](https://httpbin.org/) to test curl command line options. It echoes back your requests so you can see what’s happening.
Yo, `-sS` is my go-to combo: `-s` silences the progress meter but `-S` shows errors if stuff fails. Perfect for scripts where you only wanna see output if something breaks.

Also, `-w` lets you format the output with variables like `%{http_code}` or `%{time_total}`. Super handy for automation.

For learning, I just spam `curl --help` and pick one new flag to try each day. Slow but works.
Don’t forget `-o` to save output to a custom filename! Way better than `-O` if you wanna rename stuff on the fly.

And `-b`/`-c` for cookies are essential if you’re dealing with sessions. Pair it with `-j` to ignore expired cookies and avoid headaches.

For reference, [Explain Shell](https://explainshell.com/) breaks down curl command line options nicely if you’re ever confused.
`-I` (HEAD request) is underrated—great for checking if a URL exists or getting headers without downloading the whole file.

Also, `--compressed` auto-deflates gzipped responses, which is nice if you’re fetching big JSON blobs.

For memorizing, I write little aliases for common curl command line options in my `.bashrc`. Like `alias curltime='curl -w "\nTime: %{time_total}s\n"'`.
If you’re lazy like me, `-K` lets you read curl command line options from a config file. Saves typing the same flags over and over.

And `-x` for proxies is a must if you’re behind corp firewall nonsense.

For quick tests, [Postman](https://www.postman.com/) can generate curl commands for you—kinda cheating but hey, whatever works.
Wow, didn’t expect so many gems here! Gonna try `-w` for timing and `-F` for file uploads first.

Quick Q: Anyone use `-J` with `-O` to handle Content-Disposition filenames? Saw it in the docs but not sure if it’s worth the hassle.

Also, httpbin.org is a game-changer—thanks for that!



Users browsing this thread: 1 Guest(s)