在vm新安装的centos系统中,一般选择NAT来设置和主机共享局域网,通过ifconfig etc0 192.168.xx.xx 这种作法机器重启之后就会失效,所以可以使用更改文件的方式完成设置centos开机自动获取ip vim /etc/sysconfig/network-scripts/ifcfg-eth0 service network start https://blog.csdn.net/xiaobei4929/article/details/40515247
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0HWADDR=08:00:27:3D:5F:38TYPE=EthernetUUID=40b4a51a-f48f-4cc3-b705-2ae27a49745bONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=staticIPADDR=192.168.1.121NETMASK=255.255.255.0GATEWAY=192.
1. 密码有效期, 密码长度 $ more /etc/login.defs # Password aging controls: # # PASS_MAX_DAYS Maximum number of days a password may be used. # PASS_MIN_DAYS Minimum number of days allowed between password changes. # PASS_MIN_LEN Minimum acceptable password leng