the user tables do not use trailing backslash \ to continue lines,
so we don't want them to be interpreted thusly, so we use 'read -r'
(SC2162).
Integer variables need not be quoted (SC2086). In any case, should
there be an actual issue and they be set empty, that would cause a
runtime issue, wether they be quoted or not.
The binary -o and -a ar perfectly defined in bash's test (SC2166).
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>