# dd.tx is actually a folder.
# Notices the ’d’ in the long format list.
[intro_to_linux]$ ls -l data
total 4
drwxrwxr-x 6 arcc-t05 arcc-t05 2021
drwxrwxr-x 6 arcc-t05 arcc-t05 2022
drwxrwxr-x 5 arcc-t05 arcc-t05 2023
drwxrwxr-x 2 arcc-t05 arcc-t05 dd.tx
[intro_to_linux]$ find . -type f -name "*.tx"
./data/2021/feb/february_01_2021.tx
# We explicitly want lowercase.
[intro_to_linux]$ find . -type f -iname "*.tx"
./data/2021/feb/february_01_2021.tx
./data/2022/20220723.TX