查看内核: uname -r
[root@server0 ~]# uname -r 3.10.0-123.1.2.el7.x86_64 [root@server0 ~]#
查看版本: cat /etc/redhat-release
[root@server0 ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo) [root@server0 ~]#
查看内存: cat /proc/meminfo
[root@server0 ~]# cat /proc/meminfo MemTotal: 836720 kB MemFree: 268620 kB MemAvailable: 424700 kB Buffers: 688 kB Cached: 275000 kB SwapCached: 0 kB Active: 235608 kB
查看cpu: lscpu
[root@server0 ~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 1
查看主机名: hostname
[root@S ~]# hostname S.tedu.com
设置主机名:
1.永久:vim /etc/hostname
new_hostname
2.临时:hostname new_hostname
linux光驱设备:/dev/cdrom
mount /dev/cdrom target_path 将光驱设备挂载到targer_path(访问点)
umount targer_path 卸载访问点
ntfs 格式的硬盘无法访问: mount -t ntfs-3g /dev/sdb1 /mnt
用户基本信息文件: /etc/passwd
密码信息文件 : /etc/shadow
组基本信息文件: /etc/group
组成员信息: /etc/gshadow
配置网卡:
网卡配置文件: /etc/sysconfig/network-scripts/ifcfg-eth0
dns文件: /etc/resolv.conf
配置以下静态参数:
ip地址:172.25.0.11
子网掩码:255.255.255.0
默认网关:172.25.0.254
DNS服务器:172.25.254.254
[root@localhost ~]# ifconfig | head -9 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.25.0.130 netmask 255.255.255.0 broadcast 172.25.0.255 inet6 fe80::5054:ff:fe00:b prefixlen 64 scopeid 0x20<link> ether 52:54:00:00:00:0b txqueuelen 1000 (Ethernet) RX packets 10201 bytes 773502 (755.3 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 2610 bytes 327324 (319.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@localhost ~]# nmcli connection modify 'System eth0' ipv4.method manual ipv4.addresses '172.25.0.11/24 172.25.0.254' ipv4.dns 172.25.254.254 connection.autoconnect yes [root@localhost ~]# nmcli connection up 'System eth0'
[root@server0 ~]# ifconfig | head -9 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.25.0.11 netmask 255.255.255.0 broadcast 172.25.0.255 inet6 fe80::5054:ff:fe00:b prefixlen 64 scopeid 0x20<link> ether 52:54:00:00:00:0b txqueuelen 1000 (Ethernet) RX packets 10859 bytes 838462 (818.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 2944 bytes 363161 (354.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@server0 ~]#