24 CHAPTER 1: VCX S YSTEM MAINTENANCE O VERVIEWdefault passwords. Consult with your VCX installer for the currentpasswords.Note that these passwords can be changed after the initial installation byrunning the vcx-reconfigure script. See Chapter 7.CAUTION: Do not use operating system commands or utilities to changethese passwords. The vcx-reconfigure script changes the passwordwhere necessary in VCX scripts and configurations. Operating systemcommands and utilities do not.VCX File andDirectory NameGuidelinesVCX systems adhere to file naming conventions based on Linux and UNIXC shell usage. Files may be created on other platforms such as MicrosoftWindows and then transferred to a VCX system. A valid Windows file ordirectory name may not be compatible with VCX Linux conventions. Toensure that the names of any transferred files are compatible with theVCX conventions, please use the following guidelines:■ File and directory names composed of upper and lower case letters,numbers, hyphens, and underscores are generally valid, but do notbegin a name with a hyphen.■ File or directory names can range from 1 to 255 characters.■ File or directory names must not begin with a hyphen or a period.■ Do not use any of the characters listed in Table 6 in a file or directoryname:Table 6 Characters to Avoid in File and Directory NamesCharacter Description/ Forward slash\ Backward slash‘ Single quotation mark“ Double quotation mark, Comma* Asterisk? Question mark[ and ] Left and right square brackets{ and } Left and right braces~ Tilde