Join could be also useful
linux_prompt> join file1 file2
11002 item 6
10995 item 7
79600 item 7
Now, create an .htaccess file in the web root.
Add this line at the top of the new file to activate the rewrite engine.
RewriteEngine on
Save the file and exit.
$ pangolin --update
pangolin updated to v3.1.16
pangoLEARN updated to 2021-11-04