changing php.ini using ssh

I have a dedicated server with my host but when I try to upload a plugin or theme, I get this error:

The uploaded file exceeds the upload_max_filesize directive in php.ini.

Now, according to my host, I have to use ssh to edit the php.ini file.  I'm assuming by increasing that max filesize in that file, that error will go away.

I'm unfamiliar with using ssh but what I want to do is change the php.ini file in root so that all of my website accounts on my box have increased max file size.  I'm using cpanel so what are the steps to opening and editing that file.  I'm assuming I use vi to make changes?
COwebmasterAsked:
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torakeshbCommented:
1. ssh to the server using the command "ssh <ServerName>"
2. in the console provide the command "php -i | grep 'Configuration File'"
    Output would be : php -i | grep 'Configuration File'
<tr><td class="e">Configuration File (php.ini) Path </td><td class="v">/etc/php.ini </td></tr>
3) provide the command "vi /etc/php.ini" and enter (path of php.ini can be got from the previous command"
4) search the word upload_max_filesize by simply typing /upload_max_filesize and enter
5) use the arrow keys to reach the value mentioned
6) press i for inserting
7)  once you edit press escape
8) type ":wq"


or

1. ssh to the server using the command "ssh <ServerName>"
2. in the console provide the command "php -i | grep 'Configuration File'"
    Output would be : php -i | grep 'Configuration File'
<tr><td class="e">Configuration File (php.ini) Path </td><td class="v">/etc/php.ini </td></tr>
3) use winscp and connect to the server
4) browse through the navigation to reach "/etc/php.ini" (got from step 2)
5) double click open "/etc/php.ini" (got from step 2)
6) change the upload_max_filesize to your desired one
7) click save and close. (This will upload to the server by iteself)
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COwebmasterAuthor Commented:
Okay, I tried the first option using commands in putty. I made the change from 2M to 100M and tried to save it but it says it read only.  How do I change that in cpanel or in putty?
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torakeshbCommented:
The first one I mentioned is through putty.. open putty > type the server address > enter which will prompt for login screen

It seems your user account don't have privilege to change the settings.

For CPANEL refer this URL: http://docs.cpanel.net/twiki/bin/view/AllDocumentation/WHMDocs/PhpIni
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COwebmasterAuthor Commented:
I wasn't logged in as root before.  Works like a charm now, thanks!
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