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How to tell the version of Samba running

Samba is a free re-implementation of the SMB/CIFS networking protocol which creates a compatible way of sharing files with Windows computers on Linux and BSD computers. This post looks at how to tell which version of samba is running on the server from the command line.

Use the smbstatus command from the command line to show the version, as well as some other useful information:

$ smbstatus

The first line output from the command is a blank line but the second contains the version number. For example, the second line output from the command on a CentOS 5 machine might look like this:

Samba version 3.0.25b-1.el5_1.4

The smbstatus command also shows who’s currently accessing shares, what shares are available and what files are locked.

Some full example output from the smbstatus command is as follows (I’ve changed the real folder/share names to exampleN):

Samba version 3.0.25b-1.el5_1.4
PID     Username      Group         Machine
-------------------------------------------------------------------
31784   chris         chris         laptop       (192.168.1.177)
 2389   chris         chris         desktop      (192.168.1.10)

Service      pid     machine       Connected at
-------------------------------------------------------
example1     2389   desktop       Tue Feb 10 09:30:57 2009
example2     2389   desktop       Tue Feb 10 09:30:57 2009
example3     2389   desktop       Tue Feb 10 09:30:57 2009
example2     31784  laptop        Tue Feb 10 06:41:58 2009

Locked files:
Pid          Uid        DenyMode   Access      R/W        Oplock           SharePath   Name   Time
--------------------------------------------------------------------------------------------------
2389         1000       DENY_NONE  0x100001    RDONLY     NONE             /var/www   example/www/images   Tue Feb 10 09:38:30 2009
2389         1000       DENY_NONE  0x100001    RDONLY     NONE             /var/www   example/www/images/gui   Tue Feb 10 09:38:31 2009