CurL command Rest API call with oauth 2.0 secutity error

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CurL command Rest API call with oauth 2.0 secutity error


I need to get rates for different security form REST API . the API is oauth 2.0 secured.

i need to use curl command to get json response from api .

token URL - is HTTP
data URL is - HTTPS

when trigger my command from bash script it passing and failing intermittently with following error

with error could not resolve host for curl command (exit code 6). It is stopping me from proceeding .

my command for token :

RTOKEN=$(curl -X POST $RTOKENURL -u $RCLIENTID -d "grant_type=client_credentials" -d "code=client_credentials" | grep token | cut -d, -f1 d\" -f4)

For data with above token

curl -k -o $INDIR/$IFILENAME --request GET --url $RDATAURL$RTOKEN --header 'authorization: Bearer'$RTOKEN.

so the problem is intermittent so some time i get my data in file and sometimes it fails with above error please help...

Please Note :- same URLS are working fine with POSTMAN(chrome) always.
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Libravatar::URL(3pm)					User Contributed Perl Documentation				      Libravatar::URL(3pm)

Libravatar::URL - Make URLs for Libravatars from an email address SYNOPSIS
use Libravatar::URL; my $url = libravatar_url( email => '' ); DESCRIPTION
See <> for more information. Functions libravatar_url # By email my $url = libravatar_url( email => $email, %options ); # By OpenID my $url = libravatar_url( openid => $openid, %options ); Constructs a URL to fetch the Libravatar for the given $email address or $openid URL. %options are optional. "libravatar_url" will accept all the options of "gravatar_url" in Gravatar::URL except for "rating" and "border". The available options are... size Specifies the desired width and height of the avatar (they are square). Valid values are from 1 to 512 inclusive. Any size other than 80 may cause the original image to be downsampled using bicubic resampling before output. size => 40, # 40 x 40 image default The url to use if the user has no avatar. default => "" Relative URLs will be relative to the base (ie., not your web site. Libravatar defines special values that you may use as a default to produce dynamic default images. These are "identicon", "monsterid", "wavatar" and "retro". "404" will cause the URL to return an HTTP 404 "Not Found" error instead and "mm" will display the same "mystery man" image for everybody. See <> for more info. If omitted, Libravatar will serve up their default image, the orange butterfly. base This is the URL of the location of the Libravatar server you wish to grab avatars from. Defaults to <> for HTTP and <> for HTTPS. short_keys If true, use short key names when constructing the URL. "s" instead of "size", "d" instead of "default" and so on. short_keys defaults to true. https If true, serve avatars over HTTPS instead of HTTP. You should select this option if your site is served over HTTPS to avoid browser warnings about the presence of insecure content. https defaults to false. LICENSE
Copyright 2011, Francois Marier <>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See SEE ALSO
<> - The Libravatar web site <> - The Libravatar API documentation perl v5.14.2 2012-04-04 Libravatar::URL(3pm)

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