curl

範例

檢查支援：

$ curl --version
curl 7.59.0 (x86_64-pc-linux-gnu) libcurl/7.59.0 OpenSSL/1.1.0h zlib/1.2.11 libidn2/2.0.4 libpsl/0.20.1 (+libidn2/2.0.4) nghttp2/1.31.0
Release-Date: 2018-03-14
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets HTTPS-proxy PSL

下載到指定檔案：

curl http://example.com -o filename

下載、處理重導向、處理續傳：

curl -O -L -C - http://example.com/filename

送出 JSON：

curl -d '{"name":"bob"}' -H 'Content-Type: application/json' http://example.com/users/1234

POST：

curl -d 'name=bob' http://example.com/form

測試 websocket：

curl --include \
     --no-buffer \
     --header "Connection: Upgrade" \
     --header "Upgrade: websocket" \
     --header "Host: example.com:80" \
     --header "Origin: http://example.com:80" \
     --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
     --header "Sec-WebSocket-Version: 13" \
     http://example.com:80/