curl command

What is curl command?
-> A command to transfer data from or to a server.

It supports many protocols such as FTP, SFTP, LDAP, TELNET.
The most basic usage is to use HTTP request and standard output.

curl [options] [url]

# Make an HTTP request and put the result on the standard output

$ curl http://target URL
# You can also specify the range using commas and []

$ curl 'http://{one, two, three}.example.com'

$ curl 'http://[1-3].example.com'
# Output execution result to file

$ curl http://Target URL > Output Destination

$ curl -o output destination PATH http://target URL
# Hide progress on file output(error is also hidden)

$curl -s -o output destionation Path http://target URL
# if you want to display the error above

$curl -sS -o output destination PATH http://target URL
# Display progress rate in progress bar

$curl -# -O http://Target URL
# Skip certificate error on SSL connection

$ curl -k https://target URL
# Download with URL filename(The following is saved as index.html)

$  curl -O http://target URL /index.html
# Access via proxy

$ curl -x proxy server: port number --proxy-user username:password http://target URL
# Enable redirection

$ curl -L http://Target URL
# When you resume the download again when you interrupt the download

$ curl -C -http://target URL
# Specification of HTTP method (-X)

$ curl -X PUT http://Target URL

curl -sS -Hは、エラー標示かつhttpヘッダにheader追加？
[vagrant@localhost ~]$ curl --version

curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2

Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp

Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz
[vagrant@localhost ~]$ curl -s -w '%{http_code}\n' http://www.amazon.co.jp/dp/B00JEYPPOE/ -o /dev/null

301

[vagrant@localhost ~]$ curl -s -w '%{http_code}\n' http://www.amazon.co.jp/dp/B00JEYPPOE/ -o /dev/null -A ''

301
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