How to: copy file and append current date in linux/bash
$ ls
somefile_file.jsp
$ cp somefile_file.jsp{,.`date +%Y%m%d`}
$ lssomefile_file.jsp somefile_file.jsp.20100624
$ ls
somefile_file.jsp
$ cp somefile_file.jsp{,.`date +%Y%m%d`}
$ lssomefile_file.jsp somefile_file.jsp.20100624