$ svn checkout http://svn.example.com/repos/calc bigwc
A bigwc/trunk/
A bigwc/trunk/Makefile
A bigwc/trunk/integer.c
A bigwc/trunk/button.c
A bigwc/branches/
Checked out revision 340.
$ cd bigwc
$ svn copy trunk branches/my-calc-branch
$ svn status
A + branches/my-calc-branch
$ svn commit -m “Creating a private branch of /calc/trunk.”
Adding branches/my-calc-branch
Committed revision 341.
Easier way to create branch:
$ svn copy http://svn.example.com/repos/calc/trunk
http://svn.example.com/repos/calc/branches/my-calc-branch
-m “Creating a private branch of /calc/trunk.”
Committed revision 341.