unix CPU and Core information

# Count the number of “physical processor(s)”

grep “physical id” /proc/cpuinfo | sort -u | wc -l

# Count the number of “physical cores per CPU”

grep “cpu cores” /proc/cpuinfo |sort -u |cut -d”:” -f2

# Count the number of “logical cores ” (including multi-threading cores)

grep -c “processor” /proc/cpuinfo

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