kk Blog —— 通用基础


date [-d @int|str] [+%s|"+%F %T"]
netstat -ltunp
sar -n DEV 1

交换机php telnet

https://www.cnblogs.com/kongxx/archive/2005/09/29/246492.html

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<?php

class Telnet
{
	var $sock = NULL;

	function telnet($host, $port)
	{
		$this->sock = fsockopen($host, $port);
		socket_set_timeout($this->sock,2,0);
	}

	function close()
	{
		if ($this->sock)
			fclose($this->sock);
		$this->sock = NULL;
	}

	function write($buffer)
	{
		$buffer = str_replace(chr(255),chr(255).chr(255), $buffer);
		fwrite($this->sock, $buffer);
	}

	function getc()
	{
		return fgetc($this->sock); 
	}


	function read_till($what)
	{
		$what2 = "---- More ----";
		$bufs = '';
		while (true) {
			$buf = $this->read_till_do($what);
			$bufs .= $buf;

			if ($what == (substr($buf, strlen($buf) - strlen($what)))) {
				$bufs = substr($bufs, 0, -strlen($what));
				break;
			}
			if (strpos($buf, $what2) === false)
				break;
			if ($what2 == (substr($buf, strlen($buf) - strlen($what2))))
				$bufs = substr($bufs, 0, -strlen($what2));
			$this->write(" ");
		}
		return $bufs;
	}

	function read_till_do($what)
	{
		$IAC = chr(255);
		$DONT = chr(254);
		$DO = chr(253);
		$WONT = chr(252);
		$WILL = chr(251);
		$theNULL = chr(0);

		$buf = '';
		while (1)
		{
			$c = $this->getc();

			if ($c === false)
				return $buf;
			if ($c == $theNULL)
				continue;

		//    if ($c == "1")
		//        continue;

			if ($c != $IAC) {
				$buf .= $c;

				if ($what == (substr($buf, strlen($buf) - strlen($what)))) {
					return $buf;
				} else {
					continue;
				}
			}

			$c = $this->getc();

			if ($c == $IAC) {
				$buf .= $c;
			} elseif ($c == $DO) {
				$opt = $this->getc();
		//        echo "we wont " . ord($opt) . "\n";
				fwrite($this->sock, $IAC.$WONT.$opt);
			} elseif ($c == $DONT) {
				$opt = $this->getc();
		//        echo "we wont " . ord($opt) . "\n";
				fwrite($this->sock, $IAC.$WONT.$opt);
			} elseif ($c == $WILL) {
				$opt = $this->getc();
		//        echo "we dont " . ord($opt) . "\n";
				fwrite($this->sock, $IAC.$DONT.$opt);
			} elseif ($c == $WONT) {
				$opt = $this->getc();
		//        echo "we dont " . ord($opt) . "\n";
				fwrite($this->sock, $IAC.$DONT.$opt);
			} else {
		//        echo "where are we? c=" . ord($c) . "\n";
			}
		}
	}
}

$telnet = new telnet($ip, 23);
$msg = $telnet->read_till("Password:");

$telnet->write("abc123\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display cu\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display vlan all\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display interface Vlan-interface\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display version\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display device\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display device manuinfo\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display ip routing-table\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display arp\r\n");
$msg = $telnet->read_till("<H3C>");

$telnet->write("display mac-address\r\n");
$msg = $telnet->read_till("<H3C>");

交换机开启telnet

华为与H3C交换机打开或关闭告警信息

https://blog.csdn.net/weixin_44657888/article/details/122612537

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undo terminal monitor    关闭
terminal monitor  开启

或

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undo info-center enable  关闭
info-center enable    开启

H3C & 华为

https://blog.csdn.net/qq_14829643/article/details/133721759

https://blog.csdn.net/weixin_38912654/article/details/102942423

https://blog.csdn.net/weixin_34367845/article/details/92891126

https://blog.csdn.net/u013667796/article/details/126339807

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sys
interface vlan-interface 1
ip address 192.168.1.234 24
quit

user-interface vty 0 4
authentication-mode password
set authentication password simple abc123
screen-length 0       配置终端显示行数
# screen-length 0  temporary
idle-timeout 60       配置连接超时分钟数

# user privilege level 3  # 华为3328F
quit

ip route-static 0.0.0.0 0.0.0.0 192.168.1.254
super password level 3 simple abc123

telnet server enable
protocol inbound [ssh|telnet|all] 配置VTY用户界面支持的协议

display user-interface

H3C S1600

H3C S1600系列以太网交换机 用户手册-6W208

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sys
interface vlan-interface 1
ip address 192.168.1.234 24
ip gateway 192.168.1.254
quit

user-interface vty 0 4
set authentication password simple abc123 # VTY用户认证
idle-timeout 30       # 设置连接用户超时中断时间的可选取的分钟的取值
quit

password simple abc123

# telnet 默认是开启的
ip telnet shutdown
undo ip telnet shutdown

锐捷S2910-24GT4SFP-L

https://blog.csdn.net/qq_45371244/article/details/129667289

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Ruijie>

Ruijie>enable    ---进入特权模式

Ruijie#config    ---进入全局配置模式

Ruijie(config)#interface Vlan 1    ---进入Vlan 1端口

Ruijie(config-if-VLAN 1)#ip address 192.168.1.1 255.255.255.0    ---给Vlan 1配置管理IP

Ruijie(config-if-VLAN 1)#exit    ---退回到全局模式


2.配置Telent密码

（1）用Telnet模式登录时使用密码登录交换机配置

Ruijie(config)#line vty 0 4    ---进入Telnet密码配置模式，0 4表示允许共5个用户（即用户0至用户5一共五位用户）同时使用Telnet模式登入到交换机

Ruijie(config-line)#login    ---启动密码登录

Ruijie(config-line)#password ruijie    ---设置密码为ruijie

Ruijie(config-line)#exit    ---退回到全局模式

Ruijie(config)#enable password ruijie    ---设置enable登录密码为ruijie

Ruijie(config)#end    ---退出到特权模式

Ruijie#write    ---确认配置正确，保存已经设置好的配置


username admin password ruijie    ---设置远程登录的用户名为admin密码为ruijie

Ruijie#show interfaces vlan 1

博达

https://wenku.baidu.com/view/0aa095b501d276a20029bd64783e0912a2167c99.html?_wkts_=1729989536547

https://www.cnblogs.com/rivanwang/p/14704184.html

S2548GX 博达路由器console线 与 思科/华为 不通用。

需要 RLC0301

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Switch> enable
Switch# config
Switch# show configuration
Switch# show interface vlan 1

Switch_config# username admin password abc123
Switch_config# terminal length 0

查看vlan mac

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<suncables9306>display interface Vlanif main

<Quidway>display interface Vlan-interface 1

<H3C>display interface Vlan-interface 1

Ruijie#show interfaces vlan 1
Switch#show interface vlan 1

S1728GWR-4P怎么登陆web管理界面

https://support.huawei.com/enterprise/zh/knowledge/EKB1000067306

在地址栏中输入Web网管客户端的默认URL(Universal Resource Locator)地址：http://192.168.0.1%EF%BC%8C%E5%B9%B6%E6%8C%89%E2%80%9CEnter%E2%80%9D%E9%94%AE%EF%BC%8C%E5%87%BA%E7%8E%B0%E2%80%9CUser Login”用户登录对话框。如图1所示。（ip地址不对的话换192.168.1.253）

默认用户名和密码分别为admin、Admin@123。 （不行的话换admin admin试试）

ffmpeg分离MP3文件报错

https://blog.csdn.net/weixin_44736603/article/details/121537824

使用ffmpeg视频中分离出MP3文件报错

Automatic encoder selection failed for output stream #0:0. Default encoder for format mp3 (codec mp3) is probably disabled. Please choose an encoder manually. Error selecting an encoder for stream 0:0

问题原因在于只有mp3的解码库，没有mp3编码库导致的，需要添加libmp3lame第三方库。

添加libmp3lame库方式

下载压缩包 https://sourceforge.net/projects/lame/files/lame/

解压 ，进入lame-3.100目录下，在终端打开

依次执行

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./configure --enable-shared
make
make install

安装ffmpeg时， –enable-libmp3lame引入libmp3lame

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./configure --enable-shared --enable-libmp3lame
make
# make install

安装完毕之后

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vim /etc/ld.so.conf

添加
/usr/local/lib/

再执行
ldconfig