The output log is found in
You can use the 'tail' command to output the last X lines of the file, or less to read all of it (type
(yes, it has to be uppercase) to reach the end of the file after running less.
#output the last few lines
#output the last 40 lines
tail -40 /home/username/apps/projectname/current/log/unicorn.log
#read using less