I know that tail -f /var/log/messages will be keep updating on screen as the contents of file gets updated. But when I tried the same thing with a debug file system's file it is not working , any idea?
I tried ftrace and tried this: tail -f trace it is not working ?
Note, I can see the contents actually getting by using watch -n1 cat trace.
tail -f
only works with files which are appended to. Maybe your debug file is not appended but overwritten with every run?