From log file into terminal in realtime
Solution 1:
If you want to follow a log file, you can use the famous:
$ tail -f /path/to/log/file
Solution 2:
In addition to tail -f, you can also use less with the +F parameter, which will allow you to keep track of new new input, but at the same time have access to all interactive functions of less, such as searching.
In some situations it is better to use tail -F (or less --follow-name) instead of tail -f. This assures that you continue following new input even if the file name changes. It is especially useful with some log-rotating software.