This is mostly based on the bash terminal but should be more application (less, tail and so on) than the specific terminal.
This is also how i use the application listed below to read logs and to troubleshoot.

• Less
• Tail

Less man pages, external link This

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Less man pages, external link
Tail is a usefull application for looking att appending logs. Or just the last 10 rows in the logfile.

I use it for:

1. See the end of the log-file.
2. Let tail print new rows added to the logfile.

tail {logfile}

This will print out the last 10 rows to standard out = the screen.
You can choose the number of files to be printed to screen. Use the -n flag.

tail -n 20 {logfile}

This will print out the last 20 rows of the logfile.

tail -f {logfile}

This will print out the last 10 rows and continue to print out rows when they are added to the logfile.

You can also combine the two if you want to see more rows from the logfile at the start.

tail -f -n 20 {logfile}