1、命令简介
lsmod：用于显示已加载的内核模块列表的 Linux 命令。内核模块是一种可以在运行时加载和卸载的代码，用于扩展操作系统内核的功能。
2、命令语法
lsmod [options]
3、命令描述
lsmod显示所有加载模块的信息。格式为名称、大小、使用计数、引用模块列表。显示的信息与/proc/modules中提供的信息相同如果模块通过can_unload例程控制自己的卸载，那么lsmod显示的用户计数总是-1，而不管实际的使用计数是多少。模块文件的扩展名是.ko。
4、使用示例
1）列出当前加载的模块
[root@kvm1 ~]# lsmod Module Size Used by iptable_nat 12875 1 nf_nat_ipv4 14115 1 iptable_nat nf_nat 26787 1 nf_nat_ipv4 iptable_mangle 12695 1 iptable_security 12705 1 iptable_raw 12678 1 ipt_REJECT 12541 2 nf_reject_ipv4 13373 1 ipt_REJECT nf_conntrack_ipv4 15053 2 nf_defrag_ipv4 12729 1 nf_conntrack_ipv4 xt_conntrack 12760 1 nf_conntrack 133053 4 nf_nat,nf_nat_ipv4,xt_conntrack,nf_conntrack_ipv4 iptable_filter 12810 1 iosf_mbi 14990 0 crc32_pclmul 13133 0 ghash_clmulni_intel 13273 0 ppdev 17671 0 aesni_intel 189414 0 lrw 13286 1 aesni_intel gf128mul 15139 1 lrw glue_helper 13990 1 aesni_intel ablk_helper 13597 1 aesni_intel pcspkr 12718 0 sg 40721 0 cryptd 20511 3 ghash_clmulni_intel,aesni_intel,ablk_helper joydev 17389 0 i2c_piix4 22401 0 parport_pc 28205 0 virtio_balloon 18015 0 parport 46395 2 ppdev,parport_pc ip_tables 27126 5 iptable_security,iptable_filter,iptable_mangle,iptable_nat,iptable_raw xfs 1003971 2 libcrc32c 12644 3 xfs,nf_nat,nf_conntrack sr_mod 22416 0 cdrom 42556 1 sr_mod ata_generic 12923 0 pata_acpi 13053 0 cirrus 24383 1 drm_kms_helper 176920 1 cirrus syscopyarea 12529 1 drm_kms_helper sysfillrect 12701 1 drm_kms_helper sysimgblt 12640 1 drm_kms_helper fb_sys_fops 12703 1 drm_kms_helper ttm 99555 1 cirrus drm 397988 4 ttm,drm_kms_helper,cirrus ata_piix 35052 0 virtio_console 28075 1 virtio_blk 18166 3 libata 242992 3 pata_acpi,ata_generic,ata_piix crct10dif_pclmul 14307 0 crct10dif_common 12595 1 crct10dif_pclmul virtio_net 28063 0 crc32c_intel 22094 1 serio_raw 13434 0 floppy 69432 0 i2c_core 63151 3 drm,i2c_piix4,drm_kms_helper virtio_pci 22934 0 virtio_ring 22746 5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_console virtio 14959 5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_console dm_mirror 22289 0 dm_region_hash 20813 1 dm_mirror dm_log 18411 2 dm_region_hash,dm_mirror dm_mod 123941 8 dm_log,dm_mirror
2）同样加载的模块也可以在/proc/modules中看到
[root@kvm1 ~]# cat /proc/modules iptable_nat 12875 1 - Live 0xffffffffc06d5000 nf_nat_ipv4 14115 1 iptable_nat, Live 0xffffffffc06da000 nf_nat 26787 1 nf_nat_ipv4, Live 0xffffffffc06cd000 iptable_mangle 12695 1 - Live 0xffffffffc06c8000 iptable_security 12705 1 - Live 0xffffffffc06c3000 iptable_raw 12678 1 - Live 0xffffffffc06be000 ipt_REJECT 12541 2 - Live 0xffffffffc06b9000 nf_reject_ipv4 13373 1 ipt_REJECT, Live 0xffffffffc06b4000 nf_conntrack_ipv4 15053 2 - Live 0xffffffffc06ab000 nf_defrag_ipv4 12729 1 nf_conntrack_ipv4, Live 0xffffffffc067f000 xt_conntrack 12760 1 - Live 0xffffffffc067a000 nf_conntrack 133053 4 nf_nat_ipv4,nf_nat,nf_conntrack_ipv4,xt_conntrack, Live 0xffffffffc0689000 iptable_filter 12810 1 - Live 0xffffffffc0684000 iosf_mbi 14990 0 - Live 0xffffffffc066a000 crc32_pclmul 13133 0 - Live 0xffffffffc0665000 ghash_clmulni_intel 13273 0 - Live 0xffffffffc0675000 ppdev 17671 0 - Live 0xffffffffc066f000 aesni_intel 189414 0 - Live 0xffffffffc0635000 lrw 13286 1 aesni_intel, Live 0xffffffffc0630000 gf128mul 15139 1 lrw, Live 0xffffffffc062b000 glue_helper 13990 1 aesni_intel, Live 0xffffffffc0626000 ablk_helper 13597 1 aesni_intel, Live 0xffffffffc060c000 pcspkr 12718 0 - Live 0xffffffffc0611000 sg 40721 0 - Live 0xffffffffc0601000 cryptd 20511 3 ghash_clmulni_intel,aesni_intel,ablk_helper, Live 0xffffffffc061f000 joydev 17389 0 - Live 0xffffffffc05fb000 i2c_piix4 22401 0 - Live 0xffffffffc05e9000 parport_pc 28205 0 - Live 0xffffffffc05f3000 virtio_balloon 18015 0 - Live 0xffffffffc05d6000 parport 46395 2 ppdev,parport_pc, Live 0xffffffffc05dc000 ip_tables 27126 5 iptable_nat,iptable_mangle,iptable_security,iptable_raw,iptable_filter, Live 0xffffffffc0617000 xfs 1003971 2 - Live 0xffffffffc04df000 libcrc32c 12644 3 nf_nat,nf_conntrack,xfs, Live 0xffffffffc0482000 sr_mod 22416 0 - Live 0xffffffffc0487000 cdrom 42556 1 sr_mod, Live 0xffffffffc0476000 ata_generic 12923 0 - Live 0xffffffffc03f6000 pata_acpi 13053 0 - Live 0xffffffffc0400000 cirrus 24383 1 - Live 0xffffffffc04d8000 drm_kms_helper 176920 1 cirrus, Live 0xffffffffc04ab000 syscopyarea 12529 1 drm_kms_helper, Live 0xffffffffc0471000 sysfillrect 12701 1 drm_kms_helper, Live 0xffffffffc046c000 sysimgblt 12640 1 drm_kms_helper, Live 0xffffffffc03fb000 fb_sys_fops 12703 1 drm_kms_helper, Live 0xffffffffc0371000 ttm 99555 1 cirrus, Live 0xffffffffc0491000 drm 397988 4 cirrus,drm_kms_helper,ttm, Live 0xffffffffc0409000 ata_piix 35052 0 - Live 0xffffffffc03ec000 virtio_console 28075 1 - Live 0xffffffffc038c000 virtio_blk 18166 3 - Live 0xffffffffc0382000 libata 242992 3 ata_generic,pata_acpi,ata_piix, Live 0xffffffffc03af000 crct10dif_pclmul 14307 0 - Live 0xffffffffc037d000 crct10dif_common 12595 1 crct10dif_pclmul, Live 0xffffffffc0376000 virtio_net 28063 0 - Live 0xffffffffc0353000 crc32c_intel 22094 1 - Live 0xffffffffc03a8000 serio_raw 13434 0 - Live 0xffffffffc036c000 floppy 69432 0 - Live 0xffffffffc0396000 i2c_core 63151 3 i2c_piix4,drm_kms_helper,drm, Live 0xffffffffc035b000 virtio_pci 22934 0 - Live 0xffffffffc0345000 virtio_ring 22746 5 virtio_balloon,virtio_console,virtio_blk,virtio_net,virtio_pci, Live 0xffffffffc034c000 virtio 14959 5 virtio_balloon,virtio_console,virtio_blk,virtio_net,virtio_pci, Live 0xffffffffc0331000 dm_mirror 22289 0 - Live 0xffffffffc033e000 dm_region_hash 20813 1 dm_mirror, Live 0xffffffffc032a000 dm_log 18411 2 dm_mirror,dm_region_hash, Live 0xffffffffc0338000 dm_mod 123941 8 dm_mirror,dm_log, Live 0xffffffffc030a000