bash array loop is not returning correct elements-CodePudding

This is my script.sh:

emails=$(curl -X GET http://0.0.0.0:5000/v1/user/all | jq 'map(.[].email)')
echo $emails
for email in ${emails[@]}
do
  echo $email
  FROM=$(date  "%Y-%m-%d %T")
  TO=$(date -d "$today -1 month" " %Y-%m-%d %T")
  SEND=true
  JSON_STRING='{"email":"'"$email"'","from":"'"$FROM"'","to":"'"$TO"'","send":"'"$SEND"'"}'
  curl -X POST http://0.0.0.0:5000/v1/invoice/print -d JSON_STRING
done

The emails data i get from the first API call is the following:

["[email protected]", "[email protected]", "[email protected]"]

the API POST curl does this:

{"email":"[","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
{"email":"]","from":"2022-03-28 09:59:07","to":"2022-02-28 09:59:07","send":"true"}
{"message": "Internal Server Error"}

edit: the scripts echo return:

["[email protected]", "[email protected]", "[email protected]"]
[
{"email":"[","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
"[email protected]",
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
"[email protected]",
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
"[email protected]",
{"email":""[email protected]",","from":"2022-03-28 09:59:06","to":"2022-02-28 09:59:06","send":"true"}
{"message": "Internal Server Error"}
]
{"email":"]","from":"2022-03-28 09:59:07","to":"2022-02-28 09:59:07","send":"true"}
{"message": "Internal Server Error"}

I don't understand why the emails loop is treating the parentheses [ and ] and returning ' "[email protected]",' instead of just '[email protected]'? What am I doing wrong?

CodePudding user response：

This is the output you're getting from jq :

[
    "[email protected]",
    "[email protected]",
    "[email protected]",
]

bash-wise, it's not an array, it's a multi-line string.

Indexing it with [@] changes nothing and returns the whole string. Iterating over it with for var in $multiline_string executes the code for each space-separated token of the string. Since your emails do not contain spaces, that's for each line of the string.

You need to have jq produce a space-separated list of email addresses without quotes for bash to process them easily. Just change your jq command into the following :

jq -r 'map(.[].email)[]'