Running 'diff 'command after the 'find' command

Question

I'm running this code on shell

mv -f ~/sites/text1.txt  ~/sites/text2.txt;find ~/sites/ -type f -exec sha1sum {} >> ~/sites/text.txt \;diff ~/sites/text1.txt ~/sites/text2.txt;

However every time I'm having this error:

find: missing argument to `-exec'

Please anyone figure out how to get this code work?

Answer 1

mv -f ~/sites.data/text1.txt  ~/sites.data/text2.txt &&\
find ~/sites/ -type f -print0|xarg0 -0r sha1sum |sort> ~/sites.data/text1.txt &&\
diff ~/sites.data/text1.txt ~/sites.data/text2.txt

changes I made: each command is now conditionally executed based on the success of the previous command, don't try to do io redirection from find-exec, terminate find-exec with semicolon (which must be escaped), included sequence number in io redirection, added sort to ensure repeatable order, moved data files out of search target to prevent them from listing themselves.