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compare two tar.bz2

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# 1  
Old 07-29-2007
compare two tar.bz2
Hello,

I am using a bash script to archive directories of text files located in ${root}:
tar cf ${root}.tar ${root}*
bzip2 ${root}.tar
I'd like to compare the newly produced archive two.tar.bz2 with the second latest one.tar.bz2.
cmp one.tar.bz2 two.tar.bz2
returns
one.tar.bz2 two.tar.bz2 differ: byte 11, line 1
even though I am confident the text files are identical
What would be the right way to compare the archives? I guess they are different because they were produced at two different times?
Thank you
(by the way, comments on the lines used to compress the directories are quite welcome)
# 2  
Old 07-30-2007
why don't you compare size of the files
# 3  
Old 07-30-2007
comparing the sizes of the archives would not work for me because two archives may have the same size but different content. Maybe I should do the work of comparing the files I need to archive before making the archive.
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