[intro_to_linux]$ ls -l data
total 4
drwxrwxr-x 6 <username> <username> 2021
drwxrwxr-x 6 <username> <username> 2022
drwxrwxr-x 5 <username> <username> 2023
drwxrwxr-x 2 <username> <username> dd.tx

[intro_to_linux]$ find . -type f -name "*.tx"
./data/2021/feb/february_01_2021.tx

# If we ignore case:
[intro_to_linux]$ find . -type f -iname "*.tx"
./data/2021/feb/february_01_2021.tx
./data/2022/20220723.TX