% curl, http

# GET 请求示例：
curl <url>

# POST 请求示例：curl -X POST -d "username=user&password=pass" http://example.com/login
curl -X POST -d "<key_value>" <url>

# JSON 请求示例：curl -H "Content-Type: application/json" -d '{"name": "John", "age": 30}' http://example.com/data
curl -H "Content-Type: application/json" -d '<key_value>' <url>

# 文件上传示例：
curl -F "file=@<file_path>" <url>

# 下载shell并立即执行
curl -sSL <url> | sh

# 下载文件
curl -O <url>

# send a get http request
curl <url>

# send a http request
curl -X <method> <url>

# send a http request and write the output to a file
curl -X <method> <url> -o <filename>

# send a get http request and follow redirects
curl -L <url>

# send a get http request exit with a non-zero status code on failure
curl --fail <url>

# send an authenticated http request
curl -u <username>:<password> -X <method> <url>

# send a http request with a json body
curl -X <method> <url>  -H 'Content-Type: application/json' -d '<json>'

# send a http request with a form body
curl <url> -d <bodykey>=<bodyvalue>

# send a http request and see the request as well as the response
curl -v <url>

# send a http request with a body from a file
curl -X <method> <url> --data-binary "@<file>"

# send a http request with a custom header
curl -X <method> <url> -H "<headername>: <headervalue>"

$ file: ls
$ method: echo -e 'GET\nPOST\nPUT\nDELETE\nPATCH'