how to write in a user defined command

"ddd sh" <[email protected]> Thu, 6 Sep 2007 12:40:34 +0530

Newsgroups	gmane.comp.debugging.ddd.general
Message-ID	<[email protected]>

hi,
i want to put the following line in the form of a single user defined gdb
command
could any one tell me how to do this , how to put these commands in  file
where to
save that file  and how can i access these lines in a single user defined
coommand
thanks



(gdb) set $i=50
(gdb) while ($i!=0)
> print ((struct node *) &SS[$i-1])->name
> set $i=$i-1
>end

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