See the 'selective' command for doing backups if this is really what you
want to do (grab the whole link if it wraps to an additional line):

http://www.tivoli.com/support/public/Prodman/public_manuals/td/TSMC/SH26-412
2-02/en_US/HTML/ans50016.htm#HDRCMD6034

Here's a snippet from the documentation:
The selective command backs up files that you specify. If these files become
damaged or lost, you can replace them with backup versions from the server.
When you run a selective backup, all the files are candidates for back up
unless they are excluded from backup in your include-exclude list, or they
do not meet management class requirements for serialization.

During a selective backup, copies of the files are sent to the server even
if they did not change since the last backup. This might result in more than
one copy of the same file on the server. If this occurs, you might not have
as many different down-level versions of the file on the server as you
intended. Your version limit might consist of identical files. To avoid
this, use the incremental command to back up only new and changed files.

You can selectively back up single files or directories. You can also use
wildcard characters to back up groups of related files.

During a selective backup, a directory path may be backed up, even if the
specific file that was targeted for backup is not found. For example:

   selective "/dir1/dir2/bogus.txt"

still backs up dir1 and dir2 even if the file bogus.txt does not exist.

If the selective command is retried because of a communication failure or
session loss, the transfer statistics will display the number of bytes
Tivoli Storage Manager attempts to transfer during all command attempts.
Therefore, the statistics for bytes transferred may not match the file
statistics, such as those for file size.

Syntax

                            .-----------------.
                            V                 |
>>-SELective--+----------+----+- filespec---+-+----------------><
              '- options-'    '- "filespec"-'



Parameters


  options
  You can use these command line options with the selective command:
dirsonly, filesonly, volinformation, filelist. For more information, see
"Using Options with Commands".
  You can use these common options with the selective command:
changingretries, quiet, tapeprompt, subdir, . See "Setting Common Options"
for information about these common options.


  filespec
  Specifies the path and file name that you want to back up. Use wildcard
characters to select a group of files or all the files in a directory. You
can also enter up to 20 file specifications in a command by separating the
file specifications with a space. When backing up a file system, specify the
file system with a trailing slash; for example: /home/.
Examples


  Task
  Back up the proja file in the /home/devel directory.
  Command: selective /home/devel/proja


  Task
  Back up all files in the /home/devel directory whose file names begin with
proj.
  Command: selective "/home/devel/proj*"


  Task
  Back up all files in the /home/devel directory whose file names begin with
proj. Back up the single file named budget in the /user/home directory.
  Command: selective "/home/devel/proj*" /user/home/budget


  Task
  Back up the /home file system.
  Command: selective /home/