Curl

Таймаут запроса curl (timeout)

-m, --max-time <seconds>

   Maximum  time  in  seconds that you allow the whole operation to

   take.  This is useful for preventing your batch jobs from  hang‐

   ing  for  hours due to slow networks or links going down.  Since

   7.32.0, this option accepts decimal values, but the actual time‐

   out will decrease in accuracy as the specified timeout increases

   in decimal precision.  See also the --connect-timeout option.

   If this option is used several times, the last one will be used.

Regexp в запросе

В данном примере в строке запроса может быть число от 200 до 210 на месте "[200-210]"

curl --silent -f --max-filesize 500 --write-out "%{http_code}\t%{url_effective}\n" -o '#1.dmg' 'http://fmdl.filemaker.com/maint/107-85rel/fmpa_17.0.2.[200-210].dmg'

Не выводить progress bar

curl -s http://google.com

Передать в json внутри curl переменную из bash

... '{"elem":"'"$i"'"}' ...

Пример:

curl -X POST -H "Content-Type: application/json" -d '{"elem":"'"$i"'"}' "https://httpbin.org/post";

Curl socks proxy

curl --socks5 127.0.0.1:9050 <...>

Сurl tutorial with examples of usage

Curl is a linux utility that is used to make HTTP requests to a given url. It outputs HTTP response to standard output and is actually very easy to use. Here are some examples to show its usage:

Make a GET request without any data:

curl http://yilmazhuseyin.com/blog/dev/

curl --request GET 'http://yilmazhuseyin.com/blog/dev/'

Both usages are actually the same. However, I try to use second one all the time. With --request (or -X) parameter, we choose our http method to use for our requests. Its values can be GET, POST, DELETE, PUT etc.. If we don't specify this parameter, GET method will be used by default. That is why first version works same as the second one.

Make requests with different HTTP method type without data:

curl --request POST 'http://www.somedomain.com/'

curl --request DELETE 'http://www.somedomain.com/'

curl --request PUT 'http://www.somedomain.com/'

Make requests with data:

Since we learn how to make POST, GET, PUT, DELETE requests, we can now make same requests with data. In order to send data with those requests, we should use --data parameter. Here are some examples:

::::/bin/bash

# send login data with POST request

curl --request POST 'http://www.somedomain.com/login/' \

--data 'username=myusername&password=mypassword'

# send search data to with get request

curl --request GET 'http://www.youtube.com/results?search_query=my_keyword'

# send PUT request with data

curl --request PUT 'http://www.somedomain.com/rest-api/user/12345/'\

--data 'email=myemail@gmail.com'

# same thing but this one get data from a file named data.txt

curl --request PUT 'http://www.somedomain.com/rest-api/user/12345/'\

--data @data.txt

Make requests with extra headers

Sometimes you need to add HTTP headers to your requests. This is done by --header parameter.

curl --request GET 'http://www.somedomain.com/user/info/' \

--header 'sessionid:1234567890987654321'

Notice that we are using colon(":") to separate header name from its value.

Get response with HTTP headers

If you need to get HTTP headers with your response, --include parameter can be used

curl --request GET 'http://somedomain.com/' --include

Those examples cover most of the stuff curl is needed for. If you need more functionality, you can use following two commands as a reference

# gives  brief description of parameters

curl --help

# curl manual page

man curl

Символ "+" в строке запроса

%2B

Правильно интерпретировать символы в строке --data

Например "+"

Необходимо использовать --data-urlencode вместо --data,

Иначе "+" не будет виден

curl -s --request POST "https://api.telegram.org/bot460040471:AAG0t1SitML7WAcFmPYedB2pZbY14CQEYCY/sendMessage?chat_id=250607873&parse_mode=Markdown" --data-urlencode "text=test +123"