lscpu
TLDR
Display information about all CPUs
$ lscpu
Display information in a table format$ lscpu -e
Display only information about online CPUs$ lscpu -e -b
Display only information about offline CPUs$ lscpu -e -c
Display details about CPU caches$ lscpu -C
Display information in JSON format$ lscpu -J
SYNOPSIS
lscpu [-e] [-b] [-c] [-C] [-J] [-p]
DESCRIPTION
lscpu displays information about the CPU architecture gathered from /proc/cpuinfo and sysfs. It shows CPU model, cores, threads, caches, NUMA nodes, and CPU flags.
PARAMETERS
-e, --extended
Display information in extended (table) format-b, --online
Limit display to online CPUs (with -e)-c, --offline
Limit display to offline CPUs (with -e)-C, --caches
Display details about CPU caches-J, --json
Output in JSON format-p, --parse
Optimize output for parsing-x, --hex
Use hexadecimal masks for CPU sets-y, --physical
Print physical IDs instead of logical-s, --sysroot dir
Use specified directory as system root
CAVEATS
Information varies by architecture and kernel version. Some fields may not be available on all systems.
HISTORY
Part of util-linux package. Provides a convenient way to view CPU information that would otherwise require parsing /proc/cpuinfo.
