find(1) %22%24target_dir%22 -type f %21 -name %22.*%22 -newer %22%24lastepochfile%22 -print0 %7C %5C tar czvf %22%24backupfile%22 --null -T -
search for files in a directory hierarchy
find [-H] [-L] [-P] [-D debugopts] [-Olevel] [path...] [expression]
-type c
       File is of type c:

       b      block (buffered) special

       c      character (unbuffered) special

       d      directory

       p      named pipe (FIFO)

       f      regular file

       l      symbolic link; this is never true if the -L option or the  -follow  option  is  in  effect,
              unless the symbolic link is broken.  If you want to search for symbolic links when -L is in
              effect, use -xtype.

       s      socket

       D      door (Solaris)
-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.
-newer file
       File was modified more recently than file.  If file is a symbolic link and the -H option or the -L
       option is in effect, the modification time of the file it points to is always used.
-print0
       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.
source manpages: find