187  9:58    cp cool06.gif cool08.gif      <--- Making 5 new frames
   188  9:58    cp cool05.gif cool09.gif
   189  9:59    cp cool04.gif cool10.gif
   190  9:59    cp cool03.gif cool11.gif
   191  9:59    cp cool02.gif cool12.gif

bebop:~/web/022/2003> ls

anim.gif    cool02.gif  cool05.gif  cool08.gif  cool11.gif
anim2.gif   cool03.gif  cool06.gif  cool09.gif  cool12.gif
cool01.gif  cool04.gif  cool07.gif  cool10.gif  howToGif.txt

bebop:~/web/022/2003> history
     1  13:28   ssh iceman.uni.edu
     2  13:37   w
     3  13:37   cal
     4  13:51   w
     5  9:59    cd web
     6  9:59    cd 022
     7  9:59    cd 2003
     8  9:59    ls
     9  9:59    gifmerge -h
    10  10:00   gifmerge -25 -l0 cool*.gif > anim2.gif
    11  10:13   history

     gifmerge -25 -l0 cool*.gif > anim2.gif

     The animation is twice as fast as the default 0.50 seconds per frame,
     which the -25 parameter to gifmerge specfied (0.25 seconds per frame).

     minus L ZERO is the 2nd argument, -LZERO looks like TEN,
                                        but the L is for Loops, the ZERO
                                        is for loop forever.

bebop:~/web/022/2003> gifmerge -h

Usage:
gifmerge [-<r>,<g>,<b>] [-<delay>] [-l<loops>] [-d<disp>] *.gif > anim.gif

   -<delay>       set delay of between images in 1/100th secs, ie -100
                  default 50 (0.5secs)
   -l<loops>      set loop counter, ie -l0 (ever) or -l1000, default no loops

   or look at http://the-labs.com/GIFMerge/