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Need help with using strings in variable

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# 1  
Old 08-24-2015
Need help with using strings in variable
Hi,
I am calling a in-house built api from unix shell script for posting some comments on jira. Facing some problem in handling variables could someone give some insights here.

#1) Below is working

I have declared a variable called var=testing and used that var in my api it works fine.


Code:
$ var=testing
$ echo $var
testing
$ set -x
$ curl -i -H "Content-Type: application/json" -X POST -d '{"jiracomment":{"issuekey":"XXXXX-11454","comment": '\"$var\"'}}' xxx-monhost:5000/comment
+ curl -i -H 'Content-Type: application/json' -X POST -d '{"jiracomment":{"issuekey":"XXXXX-11454","comment": "testing"}}' xxx-monhost:5000/comment

@3) Below one is not working:

I have declared a variable called var="testing testing" and used that var in my api its not working. If you see below its having single quotes between "testing ' 'testing", not sure whar i messed up with quotes.

Code:
 $ var="testing testing"
 $ echo $var
testing testing
$ curl -i -H "Content-Type: application/json" -X POST -d '{"jiracomment":{"issuekey":"XXXXX-11454","comment": '\"$var\"'}}' xxx-monhost:5000/comment
+ curl -i -H 'Content-Type: application/json' -X POST -d '{"jiracomment":{"issuekey":"XXXXX-11454","comment": "testing' 'testing"}}' xxx-monhost:5000/comment
HTTP/1.0 400 BAD REQUEST


When i tried the below it works fine, I think something i mess up with the quotes in #2, any insights will be really helpful.
Code:
$ var="testing testing" 
$ echo "how r u $var"
how r u testing testing

Last edited by rbatte1; 08-25-2015 at 01:10 PM..
# 2  
Old 08-24-2015
Variables don't work in single quotes. Use them in double quotes.

Code:
$ echo '$SHELL'
$SHELL
$ echo "$SHELL"
/bin/bash
$

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