Create dhcpd.md

command/dhcpd.md

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+dhcpd
+===
+
+运行DHCP服务器。
+
+### 语法  
+
+```
+dhcpd [选项] [网络接口]
+```
+
+### 选项  
+
+```
+-p <端口> 指定dhcpd监听的端口
+-f 作为前台进程运行dhcpd
+-d 启用调试模式
+-q 在启动时不显示版权信息
+-t 简单地测试配置文件的语法是否正确的，但不会尝试执行任何网络操作
+-T 可以用来测试租约数据库文件
+-4 运行DHCP服务器
+-6 运行DHCPv6服务器
+-s <服务器> 指定发送回复的服务器
+-cf <配置文件> 指定配置文件
+-lf <租约文件> 指定租约文件
+-pf <PID文件> 指定PID文件
+-tf <跟踪输出文件> 指定文件记录DHCP服务器的整个启动状态
+```
+
+### 例子
+
+对DHCP服务器进行排错。
+
+```bash
+[root@localhost ~]# dhcpd
+InternetSystems Consortium DHCP Server 4.1.1-P1
+Copyright2004-2010 Internet Systems Consortium.
+All rightsreserved.
+For info,please visit https://www.isc.org/software/dhcp/
+Not searchingLDAP since ldap-server, ldap-port and ldap-base-dn were not specified in theconfig file
+Wrote 0deleted host decls to leases file.
+Wrote 0 newdynamic host decls to leases file.
+Wrote 1leases to leases file.
+Listening onLPF/eth0/00:0c:29:fc:2f:e5/192.168.0.0/24
+Sendingon  LPF/eth0/00:0c:29:fc:2f:e5/192.168.0.0/24
+Sendingon   Socket/fallback/fallback-net
+[root@rhel~]# There's already a DHCP server running.
+ 
+This versionof ISC DHCP is based on the release available
+onftp.isc.org.  Features have been addedand other changes
+have beenmade to the base software release in order to make
+it workbetter with this distribution.
+ 
+exiting.
+```
+
+<!-- Linux命令行搜索引擎：https://jaywcjlove.github.io/linux-command/ -->