Uniq on array, not displaying correctly

Question

I am new to bash programming and I am struggling with arrays and how to operate with them. SCENARIO:

I have a variable called x which is composed of a group of IP's. This is the output when I echo $x from my script

182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 201.21.24.22 201.21.24.22 201.21.24.22
44.21.25.31 44.21.25.31 44.21.25.31 44.21.25.31
 

Then, I would like to know how many times each IP is repeated. The desired output would be:

15 182.100.67.59
4 44.21.25.31
3 201.21.24.22

I have tried the following

(IFS=" "; sort <<< "$x" ) | uniq -c

Output Note the first 1 on the output.

**1** 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 182.100.67.59 201.21.24.22 201.21.24.22 201.21.24.22 44.21.25.31 44.21.25.31 44.21.25.31 44.21.25.31 

I am not seeing this, It should be pretty simple but I can't find the solution :( Thanks! And very great community!

Answer 1

Method 1:
Use tr to replace spaces with newlines, followed by sort | uniq -c:

tr ' ' '\n' <<<"$x" | sort | uniq -c

Method 2:
Use echo with xargs -n1 to write the IPs one per line, followed by sort | uniq -c. Note that xargs is slower than tr here, plus may have potential side effects, such as quote removal:

echo "$x" | xargs -n1 | sort | uniq -c