curl/docs/cmdline-opts/write-out.d

Long: write-out
Short: w
Arg: <format>
Help: Use output FORMAT after completion
---
Make curl display information on stdout after a completed transfer. The format
is a string that may contain plain text mixed with any number of
variables. The format can be specified as a literal "string", or you can have
curl read the format from a file with "@filename" and to tell curl to read the
format from stdin you write "@-".

The variables present in the output format will be substituted by the value or
text that curl thinks fit, as described below. All variables are specified as
%{variable_name} and to output a normal % you just write them as %%. You can
output a newline by using \\n, a carriage return with \\r and a tab space with
\\t.

The output will be written to standard output, but this can be switched to
standard error by using %{stderr}.

.B NOTE:
The %-symbol is a special symbol in the win32-environment, where all
occurrences of % must be doubled when using this option.

The variables available are:
.RS
.TP 15
.B content_type
The Content-Type of the requested document, if there was any.
.TP
.B filename_effective
The ultimate filename that curl writes out to. This is only meaningful if curl
is told to write to a file with the --remote-name or --output
option. It's most useful in combination with the --remote-header-name
option. (Added in 7.26.0)
.TP
.B ftp_entry_path
The initial path curl ended up in when logging on to the remote FTP
server. (Added in 7.15.4)
.TP
.B http_code
The numerical response code that was found in the last retrieved HTTP(S) or
FTP(s) transfer. In 7.18.2 the alias \fBresponse_code\fP was added to show the
same info.
.TP
.B http_connect
The numerical code that was found in the last response (from a proxy) to a
curl CONNECT request. (Added in 7.12.4)
.TP
.B http_version
The http version that was effectively used. (Added in 7.50.0)
.TP
.B json
A JSON object with all available keys.
.TP
.B local_ip
The IP address of the local end of the most recently done connection - can be
either IPv4 or IPv6 (Added in 7.29.0)
.TP
.B local_port
The local port number of the most recently done connection (Added in 7.29.0)
.TP
.B num_connects
Number of new connects made in the recent transfer. (Added in 7.12.3)
.TP
.B num_redirects
Number of redirects that were followed in the request. (Added in 7.12.3)
.TP
.B proxy_ssl_verify_result
The result of the HTTPS proxy's SSL peer certificate verification that was
requested. 0 means the verification was successful. (Added in 7.52.0)
.TP
.B redirect_url
When an HTTP request was made without --location to follow redirects (or when
--max-redir is met), this variable will show the actual URL a redirect
\fIwould\fP have gone to. (Added in 7.18.2)
.TP
.B remote_ip
The remote IP address of the most recently done connection - can be either
IPv4 or IPv6 (Added in 7.29.0)
.TP
.B remote_port
The remote port number of the most recently done connection (Added in 7.29.0)
.TP
.B response_code
The numerical response code that was found in the last transfer (formerly
known as "http_code"). (Added in 7.18.2)
.TP
.B scheme
The URL scheme (sometimes called protocol) that was effectively used (Added in 7.52.0)
.TP
.B size_download
The total amount of bytes that were downloaded.
.TP
.B size_header
The total amount of bytes of the downloaded headers.
.TP
.B size_request
The total amount of bytes that were sent in the HTTP request.
.TP
.B size_upload
The total amount of bytes that were uploaded.
.TP
.B speed_download
The average download speed that curl measured for the complete download. Bytes
per second.
.TP
.B speed_upload
The average upload speed that curl measured for the complete upload. Bytes per
second.
.TP
.B ssl_verify_result
The result of the SSL peer certificate verification that was requested. 0
means the verification was successful. (Added in 7.19.0)
.TP
.B stderr
From this point on, the --write-out output will be written to standard
error. (Added in 7.63.0)
.TP
.B stdout
From this point on, the --write-out output will be written to standard output.
This is the default, but can be used to switch back after switching to stderr.
(Added in 7.63.0)
.TP
.B time_appconnect
The time, in seconds, it took from the start until the SSL/SSH/etc
connect/handshake to the remote host was completed. (Added in 7.19.0)
.TP
.B time_connect
The time, in seconds, it took from the start until the TCP connect to the
remote host (or proxy) was completed.
.TP
.B time_namelookup
The time, in seconds, it took from the start until the name resolving was
completed.
.TP
.B time_pretransfer
The time, in seconds, it took from the start until the file transfer was just
about to begin. This includes all pre-transfer commands and negotiations that
are specific to the particular protocol(s) involved.
.TP
.B time_redirect
The time, in seconds, it took for all redirection steps including name lookup,
connect, pretransfer and transfer before the final transaction was
started. time_redirect shows the complete execution time for multiple
redirections. (Added in 7.12.3)
.TP
.B time_starttransfer
The time, in seconds, it took from the start until the first byte was just
about to be transferred. This includes time_pretransfer and also the time the
server needed to calculate the result.
.TP
.B time_total
The total time, in seconds, that the full operation lasted.
.TP
.B url_effective
The URL that was fetched last. This is most meaningful if you've told curl
to follow location: headers.
.RE
.IP
If this option is used several times, the last one will be used.