Here are some more examples with using find command.

To remove all the core files found under the directory /opt/Application1 and it's subdirectories:

$ find /opt/Application1/. -name "core" -exec rm {} \;

To find and list all files in the /opt/apache2 that has the string "DocumentRoot" in it's contents, and ignoring the case for string matching.

$ find /opt/apache2/. -name "*" -exec grep -il "DocumentRoot" {} \;

To find the file httpd.conf file in the /opt/apache2 directory and display it's contents.

$ find /opt/apache2/. -name "httpd.conf" -exec cat {} \;

To find files in the current diretory that has the permission 755.

$ find . -perm 755

To find files that are equal or greater than 100k.

$ find . -size 100k

Please click on " man find " to see the Manual Page for this command.