find(1) . -name '*~' -print0 | perl(1) -0ne unlin
search for files in a directory hierarchy
find [-H] [-L] [-P] [-D debugopts] [-Olevel] [path...] [expression]
-name pattern
       Base of file name (the path with the leading directories removed) matches shell  pattern  pattern.
       The  metacharacters  (`*',  `?',  and  `[]')  match a `.' at the start of the base name (this is a
       change in findutils-4.2.2; see section STANDARDS CONFORMANCE below).  To ignore  a  directory  and
       the  files  under  it,  use  -prune;  see  an example in the description of -path.  Braces are not
       recognised as being special, despite the fact that some shells including Bash imbue braces with  a
       special  meaning  in  shell  patterns.   The  filename  matching  is performed with the use of the
       fnmatch(3) library function.   Don't forget to enclose the pattern in quotes in order  to  protect
       it from expansion by the shell.
       True;  print  the  full file name on the standard output, followed by a null character (instead of
       the newline character that -print uses).  This allows file names that contain  newlines  or  other
       types  of  white space to be correctly interpreted by programs that process the find output.  This
       option corresponds to the -0 option of xargs.
    A  pipeline is a sequence of one or more commands separated by one of the control operators | or |&.  The
    format for a pipeline is:

           [time [-p]] [ ! ] command [ [||&] command2 ... ]

    The standard output of command is connected  via  a  pipe  to  the  standard  input  of  command2.   This
    connection  is performed before any redirections specified by the command (see REDIRECTION below).  If |&
    is used, the standard error of command is connected to command2's standard input through the pipe; it  is
    shorthand  for  2>&1  |.   This  implicit  redirection  of  the  standard  error  is  performed after any
    redirections specified by the command.

    The return status of a pipeline is the exit status of the last command, unless  the  pipefail  option  is
    enabled.   If  pipefail  is  enabled,  the  pipeline's return status is the value of the last (rightmost)
    command to exit with a non-zero status, or zero if all commands exit successfully.  If the reserved  word
    !   precedes  a  pipeline, the exit status of that pipeline is the logical negation of the exit status as
    described above.  The shell waits for all commands in the pipeline to terminate before returning a value.

    If the time reserved word precedes a pipeline, the elapsed as well as user and system  time  consumed  by
    its execution are reported when the pipeline terminates.  The -p option changes the output format to that
    specified by POSIX.  When the shell is in posix mode, it does not recognize time as a  reserved  word  if
    the  next  token begins with a `-'.  The TIMEFORMAT variable may be set to a format string that specifies
    how the timing information should be displayed; see the description of TIMEFORMAT under  Shell  Variables

    When the shell is in posix mode, time may be followed by a newline.  In this case, the shell displays the
    total user and system time consumed by the shell and its children.  The TIMEFORMAT variable may  be  used
    to specify the format of the time information.

    Each command in a pipeline is executed as a separate process (i.e., in a subshell).
how to execute the Perl interpreter
     specifies the input record separator ($/) as an octal or hexadecimal number.  If there are no
     digits, the null character is the separator.  Other switches may precede or follow the digits.  For
     example, if you have a version of find which can print filenames terminated by the null character,
     you can say this:

         find . -name '*.orig' -print0 | perl -n0e unlink

     The special value 00 will cause Perl to slurp files in paragraph mode.  Any value 0400 or above will
     cause Perl to slurp files whole, but by convention the value 0777 is the one normally used for this

     You can also specify the separator character using hexadecimal notation: -0xHHH..., where the "H"
     are valid hexadecimal digits.  Unlike the octal form, this one may be used to specify any Unicode
     character, even those beyond 0xFF.  So if you really want a record separator of 0777, specify it as
     -0x1FF.  (This means that you cannot use the -x option with a directory name that consists of
     hexadecimal digits, or else Perl will think you have specified a hex number to -0.)
perl [ -sTtuUWX ]      [ -hv ] [ -V[:configvar] ]      [ -cw ] [ -d[t][:debugger] ] [ -D[number/list] ]
     [ -pna ] [ -Fpattern ] [ -l[octal] ] [ -0[octal/hexadecimal] ]
     [ -Idir ] [ -m[-]module ] [ -M[-]'module...' ] [ -f ]      [ -C [number/list] ]      [ -S ]
     [ -x[dir] ]      [ -i[extension] ]      [ [-e|-E] 'command' ] [ -- ] [ programfile ] [ argument ]...
source manpages: findperlrun