Linux rmmod command

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The Linux 'rmmod' command (full English spelling: remove module) is used to delete modules.

Executing the 'rmmod' command can delete unnecessary modules. The core of the Linux operating system has the characteristic of modularity, therefore, when compiling the core, it is necessary to include all the functions in the core. You can compile these functions into individual modules and load them separately when needed.

Syntax

rmmod [-as][Module Name...]

Parameters:

• -a 　Delete all modules that are not needed at present.
• -s 　Output information to the syslog resident service instead of the terminal interface.

Online Examples

Display Installed Modules

# lsmod
Module         Size Used by
cramfs         39042 1 
nfsd         238935 11 
lockd         64849 1 nfsd
nfs_acl         2245 1 nfsd
auth_rpcgss      33735 1 nfsd
sunrpc        193181 10 nfsd,lockd,nfs_acl,auth_rpcgss
exportfs        3437 1 nfsd
xt_TCPMSS        2931 0 
xt_tcpmss        1197 0 
xt_tcpudp        2011 0 
iptables_mangle     2771 0 
ip_tables        9991 1 iptables_mangle
x_tables        14299 4 
……Omitted Part of the Result
pppoe          8943 0 
pppox          2074 1 pppoe
binfmt_misc       6587 1 
snd_ens1371      18814 0 
gameport        9089 1 snd_ens1371
snd_ac97_codec    100646 1 snd_ens1371
ac97_bus        1002 1 snd_ac97_codec
snd_pcm_oss      35308 0 

Uninstall module

# rmmod -v pppoe //Uninstall module ppoe
Checking ppoe for persistent data

Install Modules

# insmod -v pppoe >1.log //Install Modules
~# tail -b 30 1.log //Display File Information

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