Linux Project

Samba
Thursday, 28 Mar 2002

Samba is an elaborate client-server system that allows Unix and PC installations to share resources such as filesystems and printers. It attempts to seamlessly integrate what would otherwise be quite separate Unix and Windows local networks. Setting up a Samba server on one of our Linux machines would allow, for instance, students working on a PC in a laboratory or dorm room to go to their PC's network neighborhood, and effectively mount their Linux home directories on their PC and share files back and forth.

VNC goes a step farther than Samba. Under VNC you can actually see your PC's desktop on your Linux monitor and manipulate it from there, but we will save that story for another day.

Samba documentation

To get off to a good start, go to the Samba web pages for the official word on how to install Samba, as well as a great deal of Samba documentation including an online version of the O'Reilly Samba book (with an impressive African ground hornbill on the cover). The notes on the present page offer something of a Fast Track version of the official instructions.

Modify /etc/samba/smb.conf

First, modify /etc/samba/smb.conf as follows:

Add under the heading [global]

    workgroup = Linuxlab

Add under the heading [homes]

    path = /home/%U 

Now run testparms to check your config file.

[root@pluto samba]# testparm /etc/samba/smb.conf
Load smb config files from /etc/samba/smb.conf
Processing section "[homes]"
Processing section "[printers]"
Loaded services file OK.
Press enter to see a dump of your service definitions

Start the samba daemons

Start the samba daemons from the command line.

[root@pluto init.d]# /etc/rc.d/init.d/smb start
Starting SMB services:                                     [  OK  ]
Starting NMB services:                                     [  OK  ]

To arrange for Samba to start automatically on rebooting, launch ksysv, locate the smb icon in the righthand column under the name Available Services, and drag it VERY CAREFULLY into the Runlevel5 Start column and slot it in just under the entry for 15 nfs. You should see a new blue entry 16 smb. Similarly, drag the smb icon from the Available Services column into the Runlevel 3 Start column and slot it in just under 15 nfs. You should see a new blue entry for 16 smb. VERY CAREFULLY, select File:Save Configuration, and exit from ksysv. If your karma is 100% up to snuff, the smbd and nmbd daemons will start up automatically after each machine reboot.

Testing the installation

Try listing the shares (= shared resources in Samba-speak) available on your host by issuing the command smbclient -L . If you are prompted for a password, just hit the enter key to submit the empty password.

[root@pluto notes]# smbclient -L pluto
added interface ip=152.97.2.210 bcast=152.97.255.255 nmask=255.255.0.0
Password: 
Anonymous login successful
Domain=[LINUXLAB] OS=[Unix] Server=[Samba 2.2.1a]

	Sharename      Type      Comment
	---------      ----      -------
	IPC$           IPC       IPC Service (Samba Server)
	ADMIN$         Disk      IPC Service (Samba Server)
	lpcs3          Printer   WL131_LaserJet_2100
	lpcs1          Printer   WL136_LaserJet_2100
	lpcs2          Printer   WL133_LaserJet_4000N

	Server               Comment
	---------            -------
	CRESSIDA             cressida server (Samba 2.0.10)
	PLUTO                Samba Server

	Workgroup            Master
	---------            -------
	LINUXLAB             CRESSIDA

Add yourself as a Samba user by typing smbpasswd -a <login> <password> where (you guessed it) <login> is your login on the linux machine and <password> is your Samba password. Thus,

smbpasswd -a parrish snagglegrumph

adds user parrish to the smbpasswd file and sets the password for parrish. You can change your Samba password with the command

smbpasswd parrish

And now for the biggest test of all. Go find a PC, click on Network Neighborhood, and keep clicking until you get down to the Linuxlab collection of "shares" (shared computers). You should see an icon there for your new Samba-ready computer. Click on it to display a login screen. Enter your login and Samba password, and -- Bingo! You should be looking at the contents of your home directory on your linux computer. Try sending a few files back and forth between the PC and the Linux box. Congratulations! This functionality provides a very smooth connection between our local linux and PC networks.


cparrish@sewanee.edu