Common Linux commands [ continuous update ]

wc

-l 显示行数
-c 显示byte长度
-w 显示字数

# 查看物理CPU个数
cat /proc/cpuinfo | grep "physical id" | sort| uniq | wc -l

# 查看逻辑CPU的个数
cat /proc/cpuinfo | grep "processor" | wc -l

#  查看单个物理CPU的核数
cat /proc/cpuinfo | grep "cpu cores" | uniq