Example 1: Delete all files with txt extension from a directory “/home/user1”

find /home/user1 \( -name '*.txt' \) -exec \rm {} \;

Example 2: Remove all files named “test.txt”  OR “test.log” from a directory” “/home/user1”  that have not been accessed for a 5 days and that are not mounted using NFS:

find  /home/user1 \( -name ‘test.txt’ -o  -name 'test.log' \) -atime +5 ! -fstype nfs -exec \rm {} \;