Bruce introduced two of the most powerful command line tools available on the UNIX and LINUX platforms: find and xargs. To quote Bruce, "With these tools you can build powerful and 'intelligent' scripts to automate a variety of tasks. Batch files weep in shame at the mere mention of "find" and "xargs"."
Switching between the Firefox browser with his .html notes and the terminal window, Bruce detailed command usage and demonstrated how they worked. There were quite a few arguments that he showed us that will deliver a plethora of results. Bruce took questions on the fly and took time to explain how to get the desired output. Several of his usage tips brought forth exclamations of amazement from the attendees.
General command descriptions from the GNU man pages.
find - search for files in a directory hierarchy
xargs - build and execute command lines from standard input
NOTE: Always read the man page for find and xargs on the system you are going to run them on. There are many variations and the commands are evolving. Test using ".exec echo" before invoking real commands, especially destructive commands like removing files!