Red Hat

 
[root@VM172016001139 etc]# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 26
model name      : Intel(R) Xeon(R) CPU           X5670  @ 2.93GHz
stepping        : 4
cpu MHz         : 2933.437
cache size      : 12288 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc up nonstop_tsc arat pni ssse3 cx16 sse4_1 sse4_2 popcnt lahf_lm
bogomips        : 5866.87
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: [8]

grep processor /proc/cpuinfo

grep '^processor' /proc/cpuinfo

awk '/^physical id/ && s[$NF]++==0' /proc/cpuinfo

awk -F: '/^physical id/ {ph=$NF} /^core id/ && a[ph,$NF]++==0' /proc/cpuinfo

lscpu

 
awk '/^physical id/ && s[$NF]++==0' /proc/cpuinfo