CODEWITHSUNDEEP
curl
Shuzheng
Shuzheng

Reputation: 13996

How to insert the contents of a file in the middle of text in `--data-binary` using `curl`?

How to insert the contents of a file in the middle of text in --data-binary using curl?

I want to insert the contents of a binary file in the middle of --data-binary, e.g. --data-binary='abc@FILEdef', and have curl update the Content-Length header accordingly.

However, the preceding example doesn't seem to work.

Any ideas on how to accomplish this?

The only way I can think of is to prepend/append the text to the FILE beforehand, but this is rather cumbersome for large amounts of text.

Upvotes: 0

Views: 106

Answers (1)

Daniel Stenberg
Daniel Stenberg

Reputation: 58124

One way to accomplish this without having to generate a temporary file first, is to simply generate the POST data for curl on stdin. For example:

(printf "beginning\n" && cat $filename && printf "trailer\n") | curl --data-binary @- $url

Upvotes: 1

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