A simple and quick way to send a image to Imgur from Terminal. Required php-cli and php-curl.

imgur-cli.php

#!/usr/bin/php
<?php

/**
 *  Quick info
 * 
 * 1. Replace or use API Key provided by Bart.
 * 2. # mv imgur-cli.php imgur
 * 3. # chmod +x imgur
 * 4. # mv imgur /usr/bin
 * 5. Use it: imgur myCat.png
 * 
 */

# API Key provided by Bart;
# replace with your own or specify yours as IMGUR_CLIENT_ID envionment variable
# to avoid limits

$client_id = 'c9a6efb3d7932fd';


if ( empty($client_id) )                                       die('No client_id'); 
if ( empty($argv[1]) )                                         die('Usage: imgur <image>');
if ( filesize($argv[1]) > 5000000000 )                         die('Image to big.');
if ( explode('/',mime_content_type($argv[1]))[0] !== 'image' ) die('Invalid image type');

$image = file_get_contents($argv[1]);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.imgur.com/3/image.json');
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, array( "Authorization: Client-ID $client_id" ));
curl_setopt($ch, CURLOPT_POSTFIELDS, array( 'image' => base64_encode($image) ));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

$reply = curl_exec($ch);

curl_close($ch);

$reply = json_decode($reply);

if ( !empty($reply->data->link) ) {
    printf("Image sent successfully. \n\n%s\n\n", $reply->data->link);
    printf("Delete page: https://imgur.com/delete/%s\n", $reply->data->deletehash);
} else {
    echo "Upload failed.";
}
?>