4 ms·

A curl cheat sheet

124 points by fcambus 11y ago

javajosh 11y ago
May I suggest adding `--proxy URL` which is useful if using Charles/Fiddler to toggle between environments.
- est 11y ago
  I use `HTTP_PROXY=http://xxx http://xxx curl xxxx` all the way. Works for any program, without need to remember different option syntax.
  - teddyh 11y ago
    In my experience the proxy environment variable (contrary to most other environment variables) must be lower case, i.e. “http_proxy”. Therefore: http_proxy=http://proxy-server.example:3128/ some_command
    - est 11y ago
      You are absolutely right. I stand corrected.
- bagder 11y ago
  -x is already in there, which is the short version of --proxy...
wldcordeiro 11y ago
While great, I stopped using it for httpie instead, it has a much simpler interface.
- sudo_bang_bang 11y ago
  Likewise, I switched over. I just wish HTTPie could have an "output to curl" feature.
  - dfc 11y ago
    I apologize if this is obvious but I do not understand why you wish httpie had an output to curl feature? Am I missing some sarcastic twist?
    - trashcan 11y ago
      I think they meant that it would useful to have it provide a curl equivalent command, much like chrome has in the network section.
    - lkey 11y ago
      I'd guess it has something to do with curl being available everywhere and httpie requiring installation. Oftentimes you can't enforce that your preferred alternative is deployed where you'd like to run scripts, so http->curl.
- sohkamyung 11y ago
  Maybe I'm wrong, but httpie appears to be targetting http transactions only, while curl supports multiple protocols (ftp, etc.). curl's syntax is also baked into various Web Browser network debuggers. Both Chrome and Firefox's network transactions display have a "output to curl" option to allow you to recreate the network transaction exactly. Edit: on Firefox, the option is "Copy as curl"
  - wldcordeiro 11y ago
    That is true, curl has some additional protocol features and then of course it being a standard part of most *nix OSes makes it easy to understand why Chrome and Firefox both have the copy as curl option. I still use curl regularly but for any pure http(s) stuff I use httpie because of its improved user experience.
coderholic 11y ago
Not strictly a curl hack, but you can quickly get your IP geolocation details with curl and http://ipinfo.io http://ipinfo.io (full disclosure, it's my service): $ curl ipinfo.io { "ip": "208.54.39.206", "hostname": "mce2736d0.tmodns.net", "city": "Los Angeles", "region": "California", "country": "US", "loc": "34.0522,-118.2437", "org": "AS21928 T-Mobile USA, Inc.", "postal": "90013", "phone": 213 } Or just your IP $ curl ipinfo.io/ip 208.54.39.206 Or any other field (eg. city) $ curl ipinfo.io/city Los Angeles Or lookup another IP $ curl ipinfo.io/8.8.8.8 { "ip": "8.8.8.8", "hostname": "google-public-dns-a.google.com", "city": "Mountain View", "region": "California", "country": "US", "loc": "37.3860,-122.0838", "org": "AS15169 Google Inc.", "postal": "94040", "phone": 650 } Or a specific field for that IP: $ curl ipinfo.io/8.8.8.8/org AS15169 Google Inc.
- dfc 11y ago
  If you start a comment out with "not strictly [related to linked article]" and hijack the discussion by plugging a website it seems like the decent thing to do is mention that you are the developer behind said website. I think this is even more important when you include so much <pre> text that the other comments are pushed so far down the page. Full-Disclosure: Some people still believe in it
  - coderholic 11y ago
    Thanks for the tip. I've updated the comment to add the disclosure. Definitely not my intention to hide it though, it's clearly listed in my profile.
  - sigma2015 11y ago
    > the decent thing to do is mention that you are the developer behind said website or just use a fake account ... like anybody else :D
- krat0sprakhar 11y ago
  I can't probably count how many times I use this in a week. Thank you very much for this service :)
trashcan 11y ago
Slightly offtopic, but I highly recommend using httpie for command line http: https://github.com/jkbrzt/httpie https://github.com/jkbrzt/httpie No cheatsheeet needed, the syntax is a lot friendler.
- nulltype 11y ago
  httpie is the last curl cheatsheet you'll ever need
- glynjackson 11y ago
  Found httpie sometime back. I still use curl but 80% of the time I use httpie now.
est 11y ago
curl -e "referer"
baldfat 11y ago
Confessions. I know I should use curl but I never do and just use wget and think curl is just a one year newer wget :( curl is better tool than wget but I used wget first and never changed. I do use aria2c more now for downloading but I know curl is a great tool I don't use.

A curl cheat sheet

124 points by fcambus 11y ago

javajosh 11y ago

May I suggest adding `--proxy URL` which is useful if using Charles/Fiddler to toggle between environments.

est 11y ago
I use `HTTP_PROXY=http://xxx http://xxx curl xxxx` all the way. Works for any program, without need to remember different option syntax.
- teddyh 11y ago
  In my experience the proxy environment variable (contrary to most other environment variables) must be lower case, i.e. “http_proxy”. Therefore: http_proxy=http://proxy-server.example:3128/ some_command
  - est 11y ago
    You are absolutely right. I stand corrected.
bagder 11y ago
-x is already in there, which is the short version of --proxy...

wldcordeiro 11y ago

While great, I stopped using it for httpie instead, it has a much simpler interface.

sudo_bang_bang 11y ago
Likewise, I switched over. I just wish HTTPie could have an "output to curl" feature.
- dfc 11y ago
  I apologize if this is obvious but I do not understand why you wish httpie had an output to curl feature? Am I missing some sarcastic twist?
  - trashcan 11y ago
    I think they meant that it would useful to have it provide a curl equivalent command, much like chrome has in the network section.
  - lkey 11y ago
    I'd guess it has something to do with curl being available everywhere and httpie requiring installation. Oftentimes you can't enforce that your preferred alternative is deployed where you'd like to run scripts, so http->curl.
sohkamyung 11y ago
Maybe I'm wrong, but httpie appears to be targetting http transactions only, while curl supports multiple protocols (ftp, etc.). curl's syntax is also baked into various Web Browser network debuggers. Both Chrome and Firefox's network transactions display have a "output to curl" option to allow you to recreate the network transaction exactly. Edit: on Firefox, the option is "Copy as curl"
- wldcordeiro 11y ago
  That is true, curl has some additional protocol features and then of course it being a standard part of most *nix OSes makes it easy to understand why Chrome and Firefox both have the copy as curl option. I still use curl regularly but for any pure http(s) stuff I use httpie because of its improved user experience.

coderholic 11y ago

Not strictly a curl hack, but you can quickly get your IP geolocation details with curl and http://ipinfo.io http://ipinfo.io (full disclosure, it's my service): $ curl ipinfo.io { "ip": "208.54.39.206", "hostname": "mce2736d0.tmodns.net", "city": "Los Angeles", "region": "California", "country": "US", "loc": "34.0522,-118.2437", "org": "AS21928 T-Mobile USA, Inc.", "postal": "90013", "phone": 213 } Or just your IP $ curl ipinfo.io/ip 208.54.39.206 Or any other field (eg. city) $ curl ipinfo.io/city Los Angeles Or lookup another IP $ curl ipinfo.io/8.8.8.8 { "ip": "8.8.8.8", "hostname": "google-public-dns-a.google.com", "city": "Mountain View", "region": "California", "country": "US", "loc": "37.3860,-122.0838", "org": "AS15169 Google Inc.", "postal": "94040", "phone": 650 } Or a specific field for that IP: $ curl ipinfo.io/8.8.8.8/org AS15169 Google Inc.

dfc 11y ago
If you start a comment out with "not strictly [related to linked article]" and hijack the discussion by plugging a website it seems like the decent thing to do is mention that you are the developer behind said website. I think this is even more important when you include so much <pre> text that the other comments are pushed so far down the page. Full-Disclosure: Some people still believe in it
- coderholic 11y ago
  Thanks for the tip. I've updated the comment to add the disclosure. Definitely not my intention to hide it though, it's clearly listed in my profile.
- sigma2015 11y ago
  > the decent thing to do is mention that you are the developer behind said website or just use a fake account ... like anybody else :D
krat0sprakhar 11y ago
I can't probably count how many times I use this in a week. Thank you very much for this service :)

trashcan 11y ago

Slightly offtopic, but I highly recommend using httpie for command line http: https://github.com/jkbrzt/httpie https://github.com/jkbrzt/httpie No cheatsheeet needed, the syntax is a lot friendler.

nulltype 11y ago
httpie is the last curl cheatsheet you'll ever need
glynjackson 11y ago
Found httpie sometime back. I still use curl but 80% of the time I use httpie now.

est 11y ago

curl -e "referer"

baldfat 11y ago

Confessions. I know I should use curl but I never do and just use wget and think curl is just a one year newer wget :( curl is better tool than wget but I used wget first and never changed. I do use aria2c more now for downloading but I know curl is a great tool I don't use.