openstack devstack how to open log files

How to open log files
# screen -r

#how to exit from log files

Ctrl + a + d

##Switch between logs
ctrl + a + will get you to the appropriate console between 0 and 9


##if you want to scroll up/down, then I believe you need to press
ctrl + a
then
[
then
you can then use the up and down arrows to navigate the logs