rsync(1)

NAME
     rsync - synchronize files with their latest RCS revisions

SYNOPSIS
     rsync [ -c cmd ] [ -v ] [ -R ] [ -r rcsdir ] directory ...

DESCRIPTION
     Rsync synchronize RCS working files with the top revisions in their
     version files.  The option -v causes more verbose output.  If given
     twice, each directory name is printed as it is encountered.  The option
     -rrcsdir specifies the name of RCS subdirectories.  The default is "RCS".
     The option -ccmd causes cmd to be used instead of the default co.  The
     option -R causes rsync to descend and synchronize the entire subtree
     below each specified directory.

     For each RCS file discovered, if the corresponding working file (in the
     parent directory, with the RCS ,v suffix stripped) is either missing, or
     is both older and smaller, then rsync checks out a top of trunk revision.

     Subdirectories with names ending in ".skip" or named "old" are skipped.

     While examining RCS files, rsync also emits warnings in the cases of
     working files that are writable but not locked, of working files writable
     by group or other, and of working files that are larger than the
     corresponding RCS ,v file.