- Simply use the lscpu command to view the number of CPUs
# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 158 Model name: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz Stepping: 9 CPU MHz: 2807.994 BogoMIPS: 5615.98 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 6144K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti fsgsbase avx2 invpcid rdseed clflushopt flush_l1d - You can show the number of processing units with the nproc command
# nproc --all 4 - Another option is to use the getconf command
# getconf _NPROCESSORS_ONLN 4 - Finally, you can cat /proc/cpuinfo to list the CPU and system architecture
# cat /proc/cpuinfo - You can use the combination of the grep and wc commands as follows to print the output
# grep processor /proc/cpuinfo | wc -l 4 # echo "Total logical core(s): $(grep processor /proc/cpuinfo | wc -l)" Total logical core(s): 4 # echo "Core per cpu: $(grep '^core id' /proc/cpuinfo | sort -u | wc -l)" Core per cpu: 4
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