cut a log file

Hi All,
I have a big log file which I cannot open in vi.
Is there a way to cut it into small parts.

Thanks in advance.

man split

Its better to take backup of log and trace files and delete them periodically.

man more

You can user TAIL command also

tail - 100 filename (it displays from last 100 lines).

If you want to open entire file, get it on to windows machine through FTP and open it using TEXTPAD or some editor.