2

How do I list all kernel modules loaded while system startup? Is there a user space utility to list and modify the modules loaded during system startup?

I am working on RHEL6 Desktop and RHEL6 Server.

List ftp modules compiled into kernel

  modprobe -l | grep ftp
     kernel/net/netfilter/nf_conntrack_ftp.ko
     kernel/net/netfilter/nf_conntrack_tftp.ko
     kernel/net/netfilter/ipvs/ip_vs_ftp.ko
     kernel/net/ipv4/netfilter/nf_nat_ftp.ko
     kernel/net/ipv4/netfilter/nf_nat_tftp.ko

Before boot:

I unloaded 'nf_conntrack_ftp' module before system boot manually (using modprobe -r) and persistently across boot (by removing any shell script in /etc/sysconfig/modules/*.modules that loads kernel modules using /sbin/modprobe utility).

modprobe -rv nf_conntrack_ftp
lsmod | grep ftp
ls /etc/sysconfig/modules
init 6

After boot:

RHEL6 Desktop automatically loads 'nf_conntrack_ftp' module, but RHEL6 server does not.

lsmod | grep ftp
      nf_conntrack_ftp       12913  0 
      nf_conntrack           79758  5 nf_conntrack_ipv4,xt_conntrack,nf_conntrack_ftp,nf_conntrack_ipv6,xt_state


ls /sys/module/ | grep ftp
    nf_conntrack_ftp

In contrast to RHEL6 server, the RHEL6 Desktop indicates the 'nf_conntrack_ftp' module was loaded during system startup, which was verified by as above.

How do I list and modify all kernel modules configured for loading during system startup?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.