Show per-CPU topology and online state
Build a paste-ready command, then review its compatibility and effects before running it.
lscpu -e=CPU,NODE,SOCKET,CORE,ONLINEread-onlyno known side effects Compatibility
LinuxVerified for Linux using posix, bash, zsh syntax.
Operational knowledgereview due 2027-01-20
Requirementslscpulscpu must be installed and available on PATH.
Version supportlscpu Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signalsCPU NODE SOCKET CORE ONLINERepresentative successful output; values vary with the selected target and system state.
Known errorslscpu: command not foundlscpu is missing or is not available on PATH.
Verifylscpu -e=CPU,NODE,SOCKET,CORE,ONLINEThe 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
01lscpuCommandRuns the lscpu stage of this one-liner.
02-e=CPU,NODE,SOCKET,CORE,ONLINEOptionConfigures lscpu with the -e=CPU,NODE,SOCKET,CORE,ONLINE option.
Example input
lscpu -e=CPU,NODE,SOCKET,CORE,ONLINE
Example output
CPU NODE SOCKET CORE ONLINE
0 0 0 0 yes
1 0 0 0 yes
Illustrative output — exact values vary by system and data.
Official sources