17 7 月, 2015
Not use ubuntu for long time… some useful commands had forgot, summary again:
1. Permit root login
gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf –> “greeter-show-manual-login=true”
sudo passwd root
reboot
2. Change language
gedit /etc/default/locale –> change what do you want
reboot
3. Script couldn’t run on linux “bad interpreter: No such file or directory”
that should dos format, need change to unix format
vi xxx
check format by “:set ff” or “:set fileformat”
change format by “:set ff=unix” or “:set fileformat=unix”
:wq
4. Enable ssh service
sudo apt-get install openssh-server
gedit /etc/ssh/sshd_config –> “PermitRootLogin yes”
restart by “/etc/init.d/ssh restart”
check by “ps -ef|grep ssh”
reboot
5. Disable firewall
check whether enable by “ufw status”
disable by “ufw disable”
6. Change update source
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo vim /etc/apt/sources.list
sudo apt-get update
Refer to default source, can reference this article.
7. Change ip address, add/del GW route, add text to file
sudo ifconfig eth1 up
sudo ifconfig eth0 down
sudo ifconfig eth1 up 10.0.0.30 netmask 255.255.255.128
sudo route add -net 0.0.0.0/0 gw 10.0.0.126 dev eth1
sudo echo ‘nameserver x.x.x.x’ >> /etc/resolv.conf
8. Install DHCP Server
sudo apt-get install isc-dhcp-server
vim /etc/default/isc-dhcp-server
13 1 月, 2015
If customer want to focus a alarm on their NMS by SNMP Trap, they can config “snmp-server traps syslog”. But if customer no filter feature on NMS, they couldn’t find special alarm in all syslog, now we can use EEM + TCL to match customer requirement.
Follow TCL Script:
::cisco::eem::event_register_syslog pattern $_error_log occurs $_number period $_times maxrun 300
namespace import ::cisco::eem::*
namespace import ::cisco::lib::*
set alarm "***OOB_ERROR Happened!***"
sys_reqinfo_snmp_trapvar var temp oid 1.1.1.1.1.1.1.1 string $alarm
sys_reqinfo_snmp_trap enterprise_oid 1.3.6.1 generic_trapnum 6 specific_trapnum 2 trap_oid 1.1.1.1.1.1.1.1.1.1.1.1.1 trap_var temp
完整阅读
18 11 月, 2014
youtube上有个视频教程，做的很好，详细看下面链接：
https://www.youtube.com/watch?v=_O0Pac0a6g8
下面是升级过程简述：
1. 开启ESXI的SSH：
完整阅读
24 12 月, 2013
在09年我总结过在linux上如何建立tap口，并连接dynampis，传送到《Linux Ubuntu dynamips bundle Loopback Port》，现在工作平台转到MAC上了，MAC如何绑定tap口呢？
首先去http://tuntaposx.sourceforge.net下载相应的driver并安装，安装后你就可以看到dev中已经有相应的设备了：
x-mac:dev yong$ ls /dev/tap*
/dev/tap0 /dev/tap11 /dev/tap14 /dev/tap3 /dev/tap6 /dev/tap9
/dev/tap1 /dev/tap12 /dev/tap15 /dev/tap4 /dev/tap7
/dev/tap10 /dev/tap13 /dev/tap2 /dev/tap5 /dev/tap8
完整阅读
19 12 月, 2012
过滤语句在IOS/XR的平台上非常有用，特别是在输出大量信息的情况下。在此总结一部分常用的过滤方式：
1.RP/0/RP1/CPU0:ios#admin show controllers fabric link port s2tx | i 3/SM5/1 | i UP….DOWN
>>>用“.”替代空格
F1/SM10/SP/0/8 UP DOWN do 3/SM5/SP/3/27 F1/SM10/3 3/SM5/1
F1/SM10/SP/0/9 UP DOWN do 3/SM5/SP/2/27 F1/SM10/3 3/SM5/1
F1/SM10/SP/0/26 UP DOWN do 3/SM5/SP/1/27 F1/SM10/3 3/SM5/1
F1/SM10/SP/0/43 UP DOWN do 3/SM5/SP/2/11 F1/SM10/3 3/SM5/1
F1/SM10/SP/1/9 UP DOWN do 3/SM5/SP/2/0 F1/SM10/3 3/SM5/1
完整阅读