| Forum upgrade - Linux commands help?
Hello,
I have a forum running vbulletin on one of my sites host here. Occasionally i need to do upgrades to the forum software, which intails uploading the new version and overwriting all files in the forum directory and it's sub directories.
What i was wondering (to reduce downtime) is could i upload the files into a different directory and use a command from the command line (using SSH) to copy the directory and all its content, overwriting all files in the old directory?
If so what command would i use?
The forum directory is "forum" and the uploaded files are in "forumnew" i need to copy "forumnew" over "forum" replacing all files, but keeping any files which are not in the "forumnew" directory. Also there are sub-directories in both.
Thanks | 
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