List loaded kernel modules
Build a paste-ready command, then review its compatibility and effects before running it.
read-onlyno known side effects Compatibility
LinuxVerified for Linux using posix, bash, zsh syntax.
Operational knowledgereview due 2027-01-20
Requirementslsmodlsmod must be installed and available on PATH.
Version supportlsmod Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signalsModule Size Used byRepresentative successful output; values vary with the selected target and system state.
Known errorslsmod: command not foundlsmod is missing or is not available on PATH.
Verifylsmod | head -12The output matches the expected target and exits without an error.Rollback noteNot required: this command is read-only and does not change system state.
Command breakdown
01lsmodCommandRuns the lsmod stage of this one-liner.
02|PipelinePasses the output on the left to the command on the right.
03headCommandRuns the head stage of this one-liner.
04-12OptionConfigures head with the -12 option.
Example input
lsmod | head -12
Example output
Module Size Used by
nf_conntrack 212992 2
xfs 1900544 1
Illustrative output — exact values vary by system and data.
Official sources