search for files in a directory hierarchy

find [-H] [-L] [-P] [-D debugopts] [-Olevel] [path...] [expression]

-not expr
       Same as ! expr, but not POSIX compliant.

-path pattern
       File  name  matches  shell pattern pattern.  The metacharacters do not treat `/' or `.' specially;
       so, for example,
                 find . -path "./sr*sc"
       will print an entry for a directory called `./src/misc'  (if  one  exists).   To  ignore  a  whole
       directory  tree, use -prune rather than checking every file in the tree.  For example, to skip the
       directory `src/emacs' and all files and directories under it, and print the  names  of  the  other
       files found, do something like this:
                 find . -path ./src/emacs -prune -o -print
       Note  that  the  pattern match test applies to the whole file name, starting from one of the start
       points named on the command line.  It would only make sense to use an absolute path name  here  if
       the  relevant start point is also an absolute path.  This means that this command will never match
       anything:
                 find bar -path /foo/bar/myfile -print
       The predicate -path is also supported by HP-UX find and will be in a forthcoming  version  of  the
       POSIX standard.

-P     Never  follow  symbolic  links.   This  is  the  default  behaviour.  When find examines or prints
       information a file, and the file is a symbolic link, the information used shall be taken from  the
       properties of the symbolic link itself.

-D debugoptions
       Print diagnostic information; this can be helpful to diagnose problems with why find is not  doing
       what  you  want.  The list of debug options should be comma separated.  Compatibility of the debug
       options is not guaranteed between releases of findutils.  For  a  complete  list  of  valid  debug
       options, see the output of find -D help.  Valid debug options include

              help   Explain the debugging options

              tree   Show the expression tree in its original and optimised form.

              stat   Print  messages  as  files  are  examined  with  the stat and lstat system calls.  The find
                     program tries to minimise such calls.

              opt    Prints diagnostic information relating to the optimisation of the expression tree; see  the
                     -O option.

              rates  Prints a summary indicating how often each predicate succeeded or failed.