find
Unix-like operating system command
In Unix-like operating systems, find is a command-line utility that locates files based on some user-specified criteria and either prints the pathname of each matched object or, if another action is requested, performs that action on each matched... Wikipedia
Example: find /tmp -name core -type f -print | xargs /bin/rm -f
Syntax: find -H -L -P -D debugopts -Olevel starting-point... expression
Developer(s): AT&T Bell Laboratories
Original author(s): Dick Haight