After you have created your /etc/smb.conf file, you can check it for correctness by using the testparm command. This command parses through your /etc/smb.conf file and checks for any syntax errors. If none are found, your configuration file will probably work correctly. It does not, however, guarantee that the services specified in the file will work. It is merely making sure that the file is correctly written.
As with all configuration files, if you are modifying an existing, working file, it is always prudent to copy the working file to a different location and modify that file. Then, you can check the file with the testparm utility. The command syntax is as follows:
# testparm /path/to/smb.conf.back-up
Load smb config files from smb.conf.back-up
Processing section "[homes]"
Processing section "[printers]"
This output shows that the Samba configuration file is correct, and, as long as all the services are running correctly on your Ubuntu machine, Samba should be working correctly. Now copy your old smb.conf file to a new location, put the new one in its place, and restart Samba with the command /etc/init.d/smb restart. Your new or modified Samba configuration should now be in place.
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