lsmod - list loaded modules.
lsmod shows information about all loaded modules. The format is name, size, use count, list of referring modules. The information displayed is identical to that available from /proc/modules. If the module controls its own unloading via a can_unload routine then the user count displayed by lsmod is always -1, irrespective of the real use count. The module files are with .ko extension.
Example-1:
To list Currently Loaded Modules:
# lsmod
output:
# lsmod
Module Size Used by
ipt_MASQUERADE 16384 3
nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE
iptable_nat 16384 1
nf_nat_ipv4 16384 1 iptable_nat
nf_nat 24576 2 nf_nat_ipv4,nf_nat_masquerade_ipv4
nf_conntrack_ipv4 16384 2
nf_defrag_ipv4 16384 1 nf_conntrack_ipv4
xt_conntrack 16384 1
nf_conntrack 106496 5 nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_ipv4
ipt_REJECT 16384 2
nf_reject_ipv4 16384 1 ipt_REJECT
xt_CHECKSUM 16384 1
iptable_mangle 16384 1
xt_tcpudp 16384 6
bridge 110592 0
stp 16384 1 bridge
llc 16384 2 stp,bridge
ip6table_filter 16384 0
ip6_tables 28672 1 ip6table_filter
iptable_filter 16384 1
ip_tables 28672 3 iptable_filter,iptable_mangle,iptable_nat
ebtable_nat 16384 0
ebtables 36864 1 ebtable_nat
x_tables 36864 11 ip6table_filter,xt_CHECKSUM,ip_tables,xt_tcpudp,ipt_MASQUERADE,xt_conntrack,iptable_filter,ebtables,ipt_REJECT,iptable_mangle,ip6_tables
iosf_mbi 16384 0
ppdev 20480 0
coretemp 16384 0
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
aesni_intel 172032 0
aes_x86_64 20480 1 aesni_intel
vmw_balloon 16384 0
lrw 16384 1 aesni_intel
gf128mul 16384 1 lrw
glue_helper 16384 1 aesni_intel
ablk_helper 16384 1 aesni_intel
cryptd 20480 3 ghash_clmulni_intel,aesni_intel,ablk_helper
serio_raw 16384 0
snd_ens1371 32768 0
snd_ac97_codec 131072 1 snd_ens1371
ac97_bus 16384 1 snd_ac97_codec
gameport 20480 1 snd_ens1371
snd_rawmidi 32768 1 snd_ens1371
vmwgfx 176128 1
snd_seq_device 16384 1 snd_rawmidi
snd_pcm 106496 2 snd_ac97_codec,snd_ens1371
btusb 40960 0
snd_timer 32768 1 snd_pcm
ttm 94208 1 vmwgfx
drm_kms_helper 126976 1 vmwgfx
snd 86016 6 snd_ac97_codec,snd_timer,snd_pcm,snd_rawmidi,snd_ens1371,snd_seq_device
bluetooth 491520 2 btusb
soundcore 16384 1 snd
drm 344064 4 ttm,drm_kms_helper,vmwgfx
vmw_vmci 65536 0
i2c_piix4 24576 0
shpchp 40960 0
8250_fintek 16384 0
parport_pc 32768 0
mac_hid 16384 0
lp 20480 0
parport 45056 3 lp,ppdev,parport_pc
hid_generic 16384 0
usbhid 53248 0
hid 110592 2 hid_generic,usbhid
psmouse 114688 0
mptspi 24576 2
mptscsih 40960 1 mptspi
ahci 36864 0
e1000 135168 0
libahci 32768 1 ahci
mptbase 102400 2 mptspi,mptscsih
scsi_transport_spi 32768 1 mptspi
pata_acpi 16384 0
same loaded modules can also be seen in /proc/modules
# cat /proc/modules
ipt_MASQUERADE 16384 3 - Live 0xffffffffc06be000
nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE, Live 0xffffffffc06b9000
iptable_nat 16384 1 - Live 0xffffffffc06b4000
nf_nat_ipv4 16384 1 iptable_nat, Live 0xffffffffc0696000
nf_nat 24576 2 nf_nat_masquerade_ipv4,nf_nat_ipv4, Live 0xffffffffc06a8000
nf_conntrack_ipv4 16384 2 - Live 0xffffffffc0691000
nf_defrag_ipv4 16384 1 nf_conntrack_ipv4, Live 0xffffffffc06a3000
xt_conntrack 16384 1 - Live 0xffffffffc069e000
nf_conntrack 106496 5 nf_nat_masquerade_ipv4,nf_nat_ipv4,nf_nat,nf_conntrack_ipv4,xt_conntrack, Live 0xffffffffc0676000
ipt_REJECT 16384 2 - Live 0xffffffffc0671000
nf_reject_ipv4 16384 1 ipt_REJECT, Live 0xffffffffc066c000
xt_CHECKSUM 16384 1 - Live 0xffffffffc0662000
iptable_mangle 16384 1 - Live 0xffffffffc065d000
xt_tcpudp 16384 6 - Live 0xffffffffc0667000
bridge 110592 0 - Live 0xffffffffc0641000
stp 16384 1 bridge, Live 0xffffffffc063c000
llc 16384 2 bridge,stp, Live 0xffffffffc0633000
ip6table_filter 16384 0 - Live 0xffffffffc062e000
ip6_tables 28672 1 ip6table_filter, Live 0xffffffffc0622000
iptable_filter 16384 1 - Live 0xffffffffc061d000
ip_tables 28672 3 iptable_nat,iptable_mangle,iptable_filter, Live 0xffffffffc03b0000
ebtable_nat 16384 0 - Live 0xffffffffc03ab000
ebtables 36864 1 ebtable_nat, Live 0xffffffffc039d000
x_tables 36864 11 ipt_MASQUERADE,xt_conntrack,ipt_REJECT,xt_CHECKSUM,iptable_mangle,xt_tcpudp,ip6table_filter,ip6_tables,iptable_filter,ip_tables,ebtables, Live 0xffffffffc050a000
iosf_mbi 16384 0 - Live 0xffffffffc0618000
ppdev 20480 0 - Live 0xffffffffc0612000
coretemp 16384 0 - Live 0xffffffffc0609000
crct10dif_pclmul 16384 0 - Live 0xffffffffc0604000
crc32_pclmul 16384 0 - Live 0xffffffffc05f7000
ghash_clmulni_intel 16384 0 - Live 0xffffffffc05ff000
aesni_intel 172032 0 - Live 0xffffffffc05cc000
aes_x86_64 20480 1 aesni_intel, Live 0xffffffffc05c6000
vmw_balloon 16384 0 - Live 0xffffffffc05c1000
lrw 16384 1 aesni_intel, Live 0xffffffffc0593000
gf128mul 16384 1 lrw, Live 0xffffffffc058e000
glue_helper 16384 1 aesni_intel, Live 0xffffffffc0589000
ablk_helper 16384 1 aesni_intel, Live 0xffffffffc04c9000
cryptd 20480 3 ghash_clmulni_intel,aesni_intel,ablk_helper, Live 0xffffffffc04ce000
serio_raw 16384 0 - Live 0xffffffffc0505000
snd_ens1371 32768 0 - Live 0xffffffffc0530000
snd_ac97_codec 131072 1 snd_ens1371, Live 0xffffffffc0568000
ac97_bus 16384 1 snd_ac97_codec, Live 0xffffffffc04dd000
gameport 20480 1 snd_ens1371, Live 0xffffffffc03d4000
snd_rawmidi 32768 1 snd_ens1371, Live 0xffffffffc04d4000
vmwgfx 176128 1 - Live 0xffffffffc053c000
snd_seq_device 16384 1 snd_rawmidi, Live 0xffffffffc0338000
snd_pcm 106496 2 snd_ens1371,snd_ac97_codec, Live 0xffffffffc0515000
btusb 40960 0 - Live 0xffffffffc059c000
snd_timer 32768 1 snd_pcm, Live 0xffffffffc04fc000
ttm 94208 1 vmwgfx, Live 0xffffffffc05a9000
drm_kms_helper 126976 1 vmwgfx, Live 0xffffffffc0430000
snd 86016 6 snd_ens1371,snd_ac97_codec,snd_rawmidi,snd_seq_device,snd_pcm,snd_timer, Live 0xffffffffc04e6000
bluetooth 491520 2 btusb, Live 0xffffffffc0450000
soundcore 16384 1 snd, Live 0xffffffffc02c8000
drm 344064 4 vmwgfx,ttm,drm_kms_helper, Live 0xffffffffc03db000
vmw_vmci 65536 0 - Live 0xffffffffc03c3000
i2c_piix4 24576 0 - Live 0xffffffffc0388000
shpchp 40960 0 - Live 0xffffffffc03b8000
8250_fintek 16384 0 - Live 0xffffffffc02e8000
parport_pc 32768 0 - Live 0xffffffffc0362000
mac_hid 16384 0 - Live 0xffffffffc02a8000
lp 20480 0 - Live 0xffffffffc02ae000
parport 45056 3 ppdev,parport_pc,lp, Live 0xffffffffc029c000
hid_generic 16384 0 - Live 0xffffffffc031a000
usbhid 53248 0 - Live 0xffffffffc038f000
hid 110592 2 hid_generic,usbhid, Live 0xffffffffc036c000
psmouse 114688 0 - Live 0xffffffffc0345000
mptspi 24576 2 - Live 0xffffffffc033e000
mptscsih 40960 1 mptspi, Live 0xffffffffc0323000
ahci 36864 0 - Live 0xffffffffc032e000
e1000 135168 0 - Live 0xffffffffc02ef000
libahci 32768 1 ahci, Live 0xffffffffc0311000
mptbase 102400 2 mptspi,mptscsih, Live 0xffffffffc02ce000
scsi_transport_spi 32768 1 mptspi, Live 0xffffffffc02bf000
pata_acpi 16384 0 - Live 0xffffffffc02b7000