====== Ubuntu - CPU - Display the number of processors ======

To display the number of CPUs.

----

===== Using /proc/cpuinfo =====

<code bash>
cat /proc/cpuinfo | grep processor | wc -l
</code>

returns:

<code bash>
24
</code>


<WRAP info>
**NOTE:**  **/proc/cpuinfo** contains all of the processor information for all current processors in the system.

  * This will include the speed, and the amount of on-chip cache, processor architecture type, and the number of cores.
</WRAP>

----

===== Using lscpu =====

<code bash>
lscpu | egrep 'CPU\(s\)'
</code>

returns:

<code bash>
CPU(s):                          24
On-line CPU(s) list:             0-23
NUMA node0 CPU(s):               0-23
</code>

----

===== Using nproc =====

<code bash>
nproc
</code>

returns:

<code bash>
24
</code>