Linux Find Out Kernel Module (Device Driver) Version Number

How do I find the version of a kernel module (*.ko files located in /lib/modules/... directory) in Linux server?

You need to use the modinfo command to display information about a Linux Kernel module. The syntax is as follows:

 
modinfo Module-Name-Here
 

To list loaded modules, enter:
# lsmod
# lsmod | less
Sample outputs:

Module                  Size  Used by
sha1_generic            1759  4
ppp_mppe                5240  2
ppp_async               6245  1
crc_ccitt               1323  1 ppp_async
ppp_generic            19291  6 ppp_mppe,ppp_async
slhc                    4003  1 ppp_generic
aes_x86_64              7340  0
aes_generic            25714  1 aes_x86_64
hidp                   11083  1
vmnet                  37057  13
vmblock                10462  1
vsock                  35775  0
vmci                   46596  1 vsock
vmmon                  64195  0
parport_pc             18855  0
ppdev                   5030  0
lp                      7462  0
acpi_cpufreq            5571  1
cpufreq_stats           2659  0
parport                27954  3 parport_pc,ppdev,lp
cpufreq_userspace       1992  0
cpufreq_conservative     5162  0
vboxnetadp              4683  0
cpufreq_powersave        902  0
vboxnetflt             15920  0
vboxdrv              1749361  2 vboxnetadp,vboxnetflt
sco                     7225  2
bridge                 39662  0
stp                     1440  1 bridge
bnep                    9443  2
rfcomm                 29629  8
l2cap                  24736  21 hidp,bnep,rfcomm
uinput                  6376  1
binfmt_misc             6447  1
fuse                   50940  1
loop                   11799  0
firewire_sbp2          11530  0
btusb                   9913  4
bluetooth              41843  10 hidp,sco,bnep,rfcomm,l2cap,btusb
snd_hda_codec_idt      42513  1
arc4                    1274  4
snd_hda_intel          20051  1
pcmcia                 19474  0
snd_hda_codec          54244  2 snd_hda_codec_idt,snd_hda_intel
ecb                     1841  4
snd_hwdep               5380  1 snd_hda_codec
snd_pcm                60503  2 snd_hda_intel,snd_hda_codec
snd_seq                42913  0
snd_timer              15582  2 snd_pcm,snd_seq
snd_seq_device          4493  1 snd_seq
iwlagn                 73171  0
iwlcore                77938  1 iwlagn
snd                    46542  10 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
soundcore               4598  1 snd
yenta_socket           19115  1
tifm_7xx1               3850  0
joydev                  8459  0
mac80211              137516  2 iwlagn,iwlcore
rsrc_nonstatic          7294  1 yenta_socket
dell_laptop             1985  0
snd_page_alloc          6265  2 snd_hda_intel,snd_pcm
tifm_core               4356  1 tifm_7xx1
nvidia              10484934  57
cfg80211              101656  3 iwlagn,iwlcore,mac80211
pcmcia_core            24118  3 pcmcia,yenta_socket,rsrc_nonstatic
rfkill                 13060  5 bluetooth,dell_laptop,cfg80211
video                  17445  0
output                  1692  1 video
i2c_i801                7830  0
i2c_core               15835  2 nvidia,i2c_i801
psmouse                49937  0
evdev                   7352  22
serio_raw               3752  0
pcspkr                  1699  0
dcdbas                  5048  1 dell_laptop
wmi                     4323  0
processor              29951  9 acpi_cpufreq
ac                      2192  0
battery                 4998  0
button                  4650  0
ext4                  288478  1
mbcache                 5050  1 ext4
jbd2                   67079  1 ext4
crc16                   1319  2 l2cap,ext4
sg                     24085  0
sd_mod                 29937  3
sr_mod                 12602  0
crc_t10dif              1276  1 sd_mod
cdrom                  29415  1 sr_mod
hid_apple               4594  0
usbhid                 33324  0
hid                    63273  3 hidp,hid_apple,usbhid
sdhci_pci               5581  0
sdhci                  13982  1 sdhci_pci
mmc_core               45798  1 sdhci
ahci                   32534  2
firewire_ohci          19692  0
tg3                    95695  0
firewire_core          36880  2 firewire_sbp2,firewire_ohci
ehci_hcd               32129  0
crc_itu_t               1307  1 firewire_core
led_class               2433  2 iwlcore,sdhci
libata                133680  1 ahci
libphy                 14054  1 tg3
scsi_mod              126597  5 firewire_sbp2,sg,sd_mod,sr_mod,libata
thermal                11674  0
usbcore               122450  4 btusb,usbhid,ehci_hcd
nls_base                6377  1 usbcore
thermal_sys            11942  3 video,processor,thermal

To find out version and other information about tg3 driver / module, enter:
# modinfo tg3 | less
# modinfo tg3 | grep -i version
Sample outputs:

version:        3.102
srcversion:     29B86B4EFF2E078A71F716A
vermagic:       2.6.32-5-amd64 SMP mod_unload modversions