用来查看机器的型号dmidecode |grep Name查看机器各种硬件信息，比如说cpu，内存，网卡等等
lshw -short|egrep "CPU|4GiB DIMM|eth"
lshw -short|grep "4GiB DIMM"|wc -l查看磁盘是否是ssd
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aAll|egrep "Raw Size|SSD"
查看内存的状态，内存的总量free -g
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