Thread: pdflatex does not produce identical output

i've noticed running pdflatex on same file twice produces 2 files differ in terms of md5sum, happen know why case? or better yet if there way produce same output each time?

the creation time , date hidden somewhere in pdf. visible contents same.

code:

$ cat hello.tex \documentclass{article} \begin{document} hello world! \end{document} $ pdflatex hello ... $ mv hello.pdf hello2.pdf $ pdflatex hello ... $ diff -a hello.pdf hello2.pdf  109,110c109,110 < /creationdate (d:20130418191554z) < /moddate (d:20130418191554z) --- > /creationdate (d:20130418191530z) > /moddate (d:20130418191530z) 131c131 < /id [<7042dc44d58e605583690e5a59b90a01> <7042dc44d58e605583690e5a59b90a01>] >> --- > /id [<bee687cffee88ac23b4208bc614483fb> <bee687cffee88ac23b4208bc614483fb>] >>

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] pdflatex does not produce identical output

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