oldfind(1) - search for files in a directory hierarchy
-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.
-L     Follow symbolic links.  When find examines or prints information about files, the information used
       shall be taken from the properties of the file to which the link points, not from the link  itself
       (unless  it  is  a  broken  symbolic  link or find is unable to examine the file to which the link
       points).  Use of this option implies -noleaf.  If you later use the -P option, -noleaf will  still
       be  in effect.  If -L is in effect and find discovers a symbolic link to a subdirectory during its
       search, the subdirectory pointed to by the symbolic link will be searched.

       When the -L option is in effect, the -type predicate will always match against  the  type  of  the
       file  that  a  symbolic  link  points  to rather than the link itself (unless the symbolic link is
       broken).  Using -L causes the -lname and -ilname predicates always to return false.
-H     Do not follow symbolic links, except while processing  the  command  line  arguments.   When  find
       examines  or  prints  information  about  files,  the  information  used  shall  be taken from the
       properties of the symbolic link itself.   The only exception to this  behaviour  is  when  a  file
       specified  on  the  command  line  is  a  symbolic  link,  and the link can be resolved.  For that
       situation, the information used is taken from whatever the link points to (that is,  the  link  is
       followed).   The information about the link itself is used as a fallback if the file pointed to by
       the symbolic link cannot be examined.  If -H is in effect and one of the paths  specified  on  the
       command  line  is  a symbolic link to a directory, the contents of that directory will be examined
       (though of course -maxdepth 0 would prevent this).

If more than one of -H, -L and -P is specified, each overrides the others; the last one appearing on  the
command  line  takes effect.  Since it is the default, the -P option should be considered to be in effect
unless either -H or -L is specified.

GNU find frequently stats files during the processing of the command line itself,  before  any  searching
has  begun.   These  options  also  affect  how those arguments are processed.  Specifically, there are a
number of tests that compare  files  listed  on  the  command  line  against  a  file  we  are  currently
considering.   In  each  case, the file specified on the command line will have been examined and some of
its properties will have been saved.  If the named file is in fact a symbolic link, and the -P option  is
in effect (or if neither -H nor -L were specified), the information used for the comparison will be taken
from the properties of the symbolic link.  Otherwise, it will be taken from the properties  of  the  file
the  link  points to.  If find cannot follow the link (for example because it has insufficient privileges
or the link points to a nonexistent file) the properties of the link itself will be used.

When the -H or -L options are in effect, any symbolic links listed as the  argument  of  -newer  will  be
dereferenced,  and the timestamp will be taken from the file to which the symbolic link points.  The same
consideration applies to -newerXY, -anewer and -cnewer.

The -follow option has a similar effect to -L, though it takes effect at the point where it appears (that
is, if -L is not used but -follow is, any symbolic links appearing after -follow on the command line will
be dereferenced, and those before it will not).
-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
       Enables  query  optimisation.    The  find  program  reorders  tests  to  speed up execution while
       preserving the overall effect; that is, predicates with side effects are not reordered relative to
       each other.  The optimisations performed at each optimisation level are as follows.
-help, --help
       Print a summary of the command-line usage of find and exit.

       Normally,  find  will emit an error message when it fails to stat a file.  If you give this option
       and a file is deleted between the time find reads the name of the file from the directory and  the
       time  it tries to stat the file, no error message will be issued.    This also applies to files or
       directories whose names are given on the command line.  This option takes effect at the  time  the
       command  line  is  read,  which  means that you cannot search one part of the filesystem with this
       option on and part of it with this option off (if you need to do that, you will need to issue  two
       find commands instead, one with the option and one without it).

-maxdepth levels
       Descend  at  most  levels  (a  non-negative  integer) levels of directories below the command line
       arguments.  -maxdepth 0
        means only apply the tests and actions to the command line arguments.

-mindepth levels
       Do not apply any tests or actions at levels less than levels (a non-negative integer).   -mindepth
       1 means process all files except the command line arguments.

-mount Don't  descend  directories  on other filesystems.  An alternate name for -xdev, for compatibility
       with some other versions of find.
       Turns off the effect of -ignore_readdir_race.

       Do not optimize by assuming that directories contain 2 fewer subdirectories than their  hard  link
       count.   This  option  is needed when searching filesystems that do not follow the Unix directory-
       link convention, such as CD-ROM or MS-DOS filesystems or AFS volume mount points.  Each  directory
       on a normal Unix filesystem has at least 2 hard links: its name and its `.'  entry.  Additionally,
       its subdirectories (if any) each have a `..'  entry  linked  to  that  directory.   When  find  is
       examining  a  directory,  after  it  has  statted 2 fewer subdirectories than the directory's link
       count, it knows that the rest of the entries in the directory are non-directories (`leaf' files in
       the directory tree).  If only the files' names need to be examined, there is no need to stat them;
       this gives a significant increase in search speed.

-regextype type
       Changes the regular expression syntax understood by -regex and -iregex tests which occur later  on
       the  command line.  Currently-implemented types are emacs (this is the default), posix-awk, posix-
       basic, posix-egrep and posix-extended.
-version, --version
       Print the find version number and exit.
-iregex pattern
       Like -regex, but the match is case insensitive.