Centos中内存CPU硬盘的查询

|--------|-----------------------------------------------------------------------------------------------------------------------------|
| 操作 | 结果（截图） |
| 内存 | #free -- m |
| | # free -h |
| 硬盘 | #dr -h |
| CPU 核数 | # cat /proc/cpuinfo | grep "processor" | wc -l |
| CPU 个数 | # cat /proc/cpuinfo | grep "cpu cores" | uniq |