查看内核版本
cat /etc/issue
CentOS release 6.3 (Final)
Kernel
on an m
查看内核版本
cat /etc/redhat-release
http://www.cnblogs.com/cloudos/p/8416415.html
查看cpu信息
有core数目
cat /proc/cpuinfo | grep name | cut -f2 -d:|uniq -c
查看mem
cat /proc/meminfo |head -1
查看disk
[l~~~@host/]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 19G 4.1G 15G 23% /
tmpfs 63G 11M 63G 1% /dev/shm
/dev/sda3 19G 325M 18G 2% /var
/dev/sda4 19G 956M 18G 6% /noah
/dev/sda5 9.1G 47M 9.0G 1% /tmp
/dev/sda6 2.6T 4.4G 2.6T 1% /home
/dev/sdb1 2.7T 165G 2.5T 7% /home/disk1
/dev/sdc1 2.7T 165G 2.5T 7% /home/disk2
/dev/sdd1 2.7T 201M 2.7T 1% /home/disk3
/dev/sde1 434G 199M 433G 1% /home/ssd1
/dev/sdf1 434G 199M 433G 1% /home/ssd2
none 63G 0 63G 0% /saver/ramdisk
none 20G 4.3G 16G 22% /argus/data
none 20G 0 20G 0% /bcm/data
.ssh/know_hosts有什么用？