Inner join on two text files

Question

Looking to perform an inner join on two different text files. Basically I\'m looking for the inner join equivalent of the GNU join program. Does such a thing exist? If not,

Answer 1

Should not the file2 contain LUA at the end?

If yes, you can still use join:

join -t'|' -12 <(sort -t'|' -k2 file1) file2