1.cpu
查看CPU信息
# 总核数 = 物理CPU个数 X 每颗物理CPU的核数
# 总逻辑CPU数 = 物理CPU个数 X 每颗物理CPU的核数 X 超线程数
# 查看物理CPU个数
cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
# 查看每个物理CPU中core的个数(即核数)
cat /proc/cpuinfo| grep "cpu cores"| uniq
# 查看逻辑CPU的个数
cat /proc/cpuinfo| grep "processor"| wc -l
# 查看CPU信息（型号）
cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
#lscpu命令，查看的是cpu的统计信息.（部分旧版本不支持）
Disk /dev/sda: 64.4 GB, 64424509440 bytes 255 heads, 63 sectors/track, 7832 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0000859f Device Boot Start End Blocks Id System /dev/sda1 * 1 64 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 64 7833 62401536 8e Linux LVM Disk /dev/mapper/vg_qdy-lv_root: 53.7 GB, 53687091200 bytes 255 heads, 63 sectors/track, 6527 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000
使用#cat /proc/cpuinfo ,可以知道每个cpu信息，如每个CPU的型号，主频等。
2.内存
#free -m # 查看内存使用量和交换区使用量
total used free shared buffers cached Mem: 3690 288 3401 0 15 119 -/+ buffers/cache: 153 3536 Swap: 3951 0 3951
# cat /proc/meminfo
#dmidecode -t memory 查看内存硬件信息
grep MemTotal /proc/meminfo# 查看内存总量
grep MemFree /proc/meminfo # 查看空闲内存量
lsmod # 列出加载的内核模块
3.磁盘
# lsblk 查看硬盘与分区分而
1 NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT 2 sda 8:0 0 60G 0 disk 3 ├─sda1 8:1 0 500M 0 part /boot 4 └─sda2 8:2 0 59.5G 0 part 5 ├─vg_qdy-lv_root (dm-0) 253:0 0 50G 0 lvm / 6 ├─vg_qdy-lv_swap (dm-1) 253:1 0 3.9G 0 lvm [SWAP] 7 └─vg_qdy-lv_home (dm-2) 253:2 0 5.7G 0 lvm /home 8 sr0 11:0 1 1024M 0 rom