find . -name blaat.txt

./blaat.txt

find /home -name blaat.txt

/home/blaat.txt

find /home -iname blaat.txt

./blaat.txt
./Blaat.txt

find / -type d -name blaat

/blaat

find . -type f -name blaat.php

./blaat.php

find . -type f -name "*.php"

./blaat.php
./login.php
./index.php

find . -type f -name "*.txt" -exec rm -f {} \;
find . -type f -name "*.mp3" -exec rm -f {} \;

find . -type f -iname "*.txt" -delete

find . -type d -empty -delete

find / -mtime 50

find / -atime 50