What does this do in bash: [@]?

[Little Girl]

Hey there,

Bo Berglund wrote:

>URL=('https://tokens.xxxxx.com/' -d $'{\n "pid": "2007524",\n
>"application": "Sports",\n "platform": "desktop",\n "cdn":
>"akamai",\n "url":
>"https://xxxxxxx.akamaized.net/hls/live/723429/Sportsa418c506/clear/master.m3u8"\n}')

>I want to understand what is going on in here so I can modify it to
>get what I want...

That URL is space-separated and contains these items:

Its first item is:

https://tokens.xxxxx.com/

Its second item is:

-d

Its third item is:

{
 "pid": "2007524",
 "application":"Sports",
 "platform": "desktop",
 "cdn": "akamai",
 "url":"https://xxxxxxx.akamaized.net/hls/live/723429/Sportsa418c506/clear/master.m3u8"
}

====================

# If I just echo the URL:

echo "$URL"

# I get this output:

https://tokens.xxxxx.com/

====================

# If I use [@] to expand the URL:

echo "${URL[@]}"

# I get this output:

https://tokens.xxxxx.com/ -d {
 "pid": "2007524",
 "application":"Sports",
 "platform": "desktop",
 "cdn": "akamai",
 "url":"https://xxxxxxx.akamaized.net/hls/live/723429/Sportsa418c506/clear/master.m3u8"
}

====================

# If I loop through the URL using FOO to mark the beginning of each
item:

for i in "${URL[@]}"; do
    echo "FOO$i"
done

# I get this output:

FOOhttps://tokens.xxxxx.com/
FOO-d
FOO{
 "pid": "2007524",
 "application":"Sports",
 "platform": "desktop",
 "cdn": "akamai",
 "url":"https://xxxxxxx.akamaized.net/hls/live/723429/Sportsa418c506/clear/master.m3u8"
}

====================

-- 
Little Girl

There is no spoon.