closed as unclear what you're asking by Anthon, Jeff Schaller♦, Stephen Harris, MelBurslan, Gilles Aug 22 '16 at 22:35
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
/home/user/Downloads/ does not exist on your system or is not accessible. Make sure that the destination directory exits, before starting the copy operation with
It would be
scp devel@siscom-online:~/pgadmin.log /home/devel/Downloads/