mjhjmtu

I have a curl command that sends a string of text to the server and I've been trying to figure out how to either have the string of text come from a file or from a bash variable. The command looks like this:

curl -X POST -u "apikey:<apikey>"
--header "Content-Type: application/json"
--data '"text": "<variable>"'
"<url>"

I can't figure out how to get a variable in there. I've tried replacing with $variable and $(< file) but I don't know how to get those to spit out text without an echo and I can't echo in a curl.

Stop the single quoted string, follow with the variable expansion, posibly double quoted, and resume the single quoted string:

--data '"text": "'"$variable"'"'

($variable should still expand to something that together with the surroundings forms legal JSON, or else the other side probably won't be very happy :) .)

Just to put one more solution here:

curl -X POST -u "apikey:$apikey"
--header "Content-Type: application/json"
--data ""text": "$variable""
"$url"

Basically, " is a quote to handle the following string together, " escapes the quote, and $varname is a variable.

I tend to use heredocs when building JSON for use with curl:

curl -s -X POST $URL -d@- <<EOF
[
 
 "id": 101,
 "text": "$variable"
 
]
EOF