If you are using a Windows operating system you probably already have a SSHclient. Just select Run from the Start Menu and type ‘telnet’ into the dialog box. If you don’t like the standard Telnet client Microsoft provides we recommend downloading ‘Putty” (for SSH as well):
NCSA SSH is available for both Macintosh and DOS. UNIX, of course, has SSH as a standard feature.
SSH is disabled by default, but can be activated on request, with a Basic hosting package and higher, at no charge.
Once you are logged into the server, you can use any of the UNIX commands to do what you need to. Please keep in mind that FTP level accounts do not come with Telnet access; if you have a Basic account and you connect, after changing the password you will be disconnected.