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1. Linux
1. Basic
   1. 橫向擷取工具 grep
   2. 縱向擷取工具 awk
   3. 文字改寫的好幫手 sed
   4. 磁碟分割管理工具
   5. 搜尋工具 find
   6. 歷史指令 history
2. Server
   1. Apache
      1. Configuration Sections
3. RHEL7
   1. 主機名稱 hostnamectl
   2. 網路連線查看工具 ss
   3. 網路管理工具 ip
   4. 服務管理工具 systemctl
   5. 防火牆管理工具 firewalld
4. Script
   1. 大量查詢MX RR
5. PHP
   1. HTML內容加入PHP
   2. HTML內容轉換為PHP
   3. 顯示範圍內任意數值
   4. 來源網段判斷顯示結果
6. Proc
   1. 查看 Mac Address
2. Network
1. Cisco
   1. 基本設定
      1. 設定主機名稱
      2. 查看網路介面
      3. 設定IP
   2. Route
      1. OSPF
2. Juniper
   1. 設定主機名稱
   2. 設定網路介面
   3. 顯示設定
   4. 回復原廠設定
   5. 系統關機
   6. 查看歷史指令
   7. 顯示路由資訊
   8. 設定靜態路由
   9. 介面開啟 ICMP
   10. 介面開啟 DHCP
3. Windows
   1. 複製指令 xcpoy
   2. Power Shell
      1. 查看 Eventlog
      2. 取得日期 Get-Date

Linux Iptables

	iptables -P [INPUT、OUTPUT、FORWARD] [ACCEPT、REJECT、DROP]
	iptables -A [INPUT、OUTPUT、FORWARD] -i [eth0、eth1、enoxxx] -s [192.168.1.32][192.168.1.0/24] -d [192.168.1.32][192.168.1.0/24] -p [tcp、udp、icmp、all] --dport [0~65535] -j [ACCEPT、REJECT、DROP、LOG]
	-P Default Policy
	-A chain
	-i 網路介面進入
	-o 網路介面離開
	-s 來源
	-d 目的
	-m mac --mac-source aa:bb:cc:dd:ee:ff
	-p Protocol [tcp、udp、icmp、all]
	--sport 來源 port
	--dport 目的 port
	-j 動作 [ACCEPT、REJECT、DROP、LOG]
	-F Delete all rules in chain or all chains
	-X Delete a user-defined chain
	-Z Zero the packet and byte counters in all chains

view raw 20160831C00.sh hosted with ❤ by GitHub

	[root@localhost ~]# iptables -P INPUT DROP
	[root@localhost ~]# iptables -A INPUT -p tcp --dport 22 -j ACCEPT
	[root@localhost ~]# iptables -A INPUT -p tcp --dport 80 -j ACCEPT

view raw 20160831C01.sh hosted with ❤ by GitHub

	[root@localhost ~]# iptables-save
	# Generated by iptables-save v1.4.21 on Wed Aug 31 01:26:18 2016
	*filter
	:INPUT DROP [2:340]
	:FORWARD ACCEPT [0:0]
	:OUTPUT ACCEPT [3:308]
	-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
	-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
	COMMIT
	# Completed on Wed Aug 31 01:26:18 2016

view raw 20160831C02.sh hosted with ❤ by GitHub

	[root@localhost ~]# iptables -L -n
	Chain INPUT (policy DROP)
	target prot opt source destination
	ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
	ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22
	Chain FORWARD (policy ACCEPT)
	target prot opt source destination
	Chain OUTPUT (policy ACCEPT)
	target prot opt source destination

view raw 20160831C03.sh hosted with ❤ by GitHub

	[root@localhost ~]# iptables -F
	[root@localhost ~]# iptables -X
	[root@localhost ~]# iptables -Z
	[root@localhost ~]# iptables -P INPUT DROP
	[root@localhost ~]# iptables -A INPUT -p tcp --dport 22 -m mac --mac-source aa:bb:cc:dd:ee:ff -j ACCEPT
	#使用網卡位置進行管制
	[root@localhost ~]# iptables -A INPUT -p tcp --dport 80 -j ACCEPT
	[root@localhost ~]# iptables-save

view raw 20160831C04.sh hosted with ❤ by GitHub

Linux History

	[root@localhost ~]# history
	#前面省略
	201 LANG=C
	212 ifup eno33554992
	215 history 10
	214 vi ~/.bash_history
	215 history
	216 vi ~/.bashrc
	217 hostname
	218 ip a
	219 ip route
	220 nmcli c s
	#顯示歷史指令
	#參數介紹
	-c 刪除紀錄
	-a 新增
	-w 寫入 histfiles
	#資料庫位置
	~/.bash_history

view raw 20160830B01.sh hosted with ❤ by GitHub

	[root@localhost ~]# history 3
	218 ip a
	219 ip route
	220 nmcli c s
	#只列出最近的3筆資料

view raw 20160830B02.sh hosted with ❤ by GitHub

	[root@localhost ~]# ![number]
	#執行[history 序號]
	[root@localhost ~]# !!
	#執行上一個指令
	[root@localhost ~]# !219
	ip route
	default via 192.168.1.1 dev eno33554992
	169.254.0.0/16 dev eno16777736 scope link metric 1002
	169.254.0.0/16 dev eno33554992 scope link metric 1003
	192.168.1.0/24 dev eno33554992 proto kernel scope link src 192.168.1.108
	192.168.2.0/24 dev eno16777736 proto kernel scope link src 192.168.2.131
	#[219]為 ip route

view raw 20160830B03.sh hosted with ❤ by GitHub

LAB 20160830A

	[root@host ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
	Generating grub configuration file ...
	Found linux image: /boot/vmlinuz-3.10.0-229.14.1.el7.x86_64
	Found initrd image: /boot/initramfs-3.10.0-229.14.1.el7.x86_64.img
	Found linux image: /boot/vmlinuz-3.10.0-229.4.2.el7.x86_64
	Found initrd image: /boot/initramfs-3.10.0-229.4.2.el7.x86_64.img
	Found linux image: /boot/vmlinuz-3.10.0-229.el7.x86_64
	Found initrd image: /boot/initramfs-3.10.0-229.el7.x86_64.img
	Found linux image: /boot/vmlinuz-0-rescue-605f01abef434fb98dd1309e774b72ba
	Found initrd image: /boot/initramfs-0-rescue-605f01abef434fb98dd1309e774b72ba.img
	done
	#參考資料:https://wiki.centos.org/zh-tw/HowTos/Grub2
	#參考資料:http://blog.xuite.net/towns/hc/302507344-CentOS+7+%E5%AE%89%E8%A3%9D%E3%80%81%E6%9E%B6%E8%A8%AD%E8%88%87%E4%BD%BF%E7%94%A8
	[root@localhost ~]# nmcli d s
	DEVICE TYPE STATE CONNECTION
	eno16777736 ethernet connected eno16777736
	eno33554992 ethernet disconnected --
	lo loopback unmanaged --
	[root@localhost ~]# nmcli c s -a
	NAME UUID TYPE DEVICE
	eno16777736 00725176-7c31-45f0-b1ce-068b26f52793 802-3-ethernet eno16777736
	[root@localhost ~]# nmcli con add type ethernet con-name eno33554992 ifname eno33554992
	Connection 'eno33554992' (b771edf9-3a00-40b1-a81e-dd0ed5178941) successfully added.
	[root@localhost ~]# ls /etc/sysconfig/network-scripts/ |grep eno33554992
	ifcfg-eno33554992
	[root@localhost ~]# nmcli c u eno33554992

view raw 20160830A01.sh hosted with ❤ by GitHub

VMWare Guest OS Network Bridged Error

• 進入 Virtual Network Editor

• 選擇目前對外連線網卡

Linux Single User Mode

[code language="bash"] systemd.unit=rescue.target [/code] [code language="bash"] mount -o remount,ro / [/code] 參考位置:https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/sec-Terminal_Menu_Editing_During_Boot.html

Linux Proc Mac Address

	[root@rhel7 ~]# cat /proc/net/arp
	IP address HW type Flags HW address Mask Device
	10.10.10.201 0x1 0x2 00:0C:29:01:98:01 * eth0
	10.10.10.202 0x1 0x2 00:0C:29:01:98:02 * eth0
	10.10.10.203 0x1 0x2 00:0C:29:01:98:03 * eth0
	10.10.10.204 0x1 0x2 00:0C:29:01:98:04 * eth0
	10.10.10.205 0x1 0x2 00:0C:29:01:98:05 * eth0
	10.10.10.206 0x1 0x2 00:0C:29:01:98:06 * eth0

view raw 20160818B01.sh hosted with ❤ by GitHub