Using Samba: A File and Print Server for Linux, Unix & Mac OS X, 3rd Edition
| source environment = filename | [global] |
Allowable values : name of file
Default : NULL
Causes Samba to read a list of environment variables from a file upon startup. This can be useful when setting up Samba in a clustered environment. The filename can begin with a "" (pipe) character, in which case it causes Samba to run the file as a command to obtain the variables .
The file must be owned by root and must not be world-writable. If the filename begins with a "" character, it must point to a command that is neither world-writable nor resides in a world-writable directory.
The data should be in the form of lines such as SAMBA_NETBIOS_NAME= myhostname . This value will then be available in the smb.conf files as %$SAMBA_NETBIOS_NAME.