How to send line break with curl?

Question

I\'ve tried the following to send a line break with curl, but \\n is not interpreted by curl.

curl -X PUT -d \"my message\\n\" http://localhost:         


        

Answer 1

Your shell is passing \ followed by n rather than a newline to curl rather than "my message\n". Bash has support for another string syntax that supports escape sequences like \n and \t. To use it, start the string with $' and end the string with ':

curl -X PUT -d $'my message\n' http://localhost:8000/hello

See ANSI-C Quoting in the Bash Reference Manual