8MEH-RO9SN-AVP3P-E3SMR-PK3ZG-HEMBR-ACED
8MEH-R6O2P-VYKXS-BAYWR-CDLLX-WEMBR-ACED
8MEH-RFOD4-SXWR8-JRTQA-JVMEN-WEMBR-ACED
8MEH-RCKOP-BP9KK-YW8EA-6ZMMK-SEMBR-ACED
8MEH-RS47Y-82HT8-GONVA-BO3R8-DEMBR-ACED
8MEH-RQX93-WYZKW-BE2FR-QX9FE-PEMBR-ACED
8MEH-REDSL-7EKFC-ULA8R-EEJMJ-4EMBR-ACED
8MEH-RSTBP-ST9JM-2TVHA-XL9M9-LEMBR-ACED
8MEH-RR6GC-KLJJD-S7DBA-NWPS7-EEMBR-ACED

第一步：将所有要播放的多媒体文件放在～/music/目录下；
　　
　　 第二步：进入music目录，执行ls > music.lst，则在music目录下生成一个名为music.lst的列表文件，并把music目录下的文件名写入到music.lst文件中；
　　
　　 第三步：运行mplayer -playlist music.lst即可实现列表播放
　　
　　 值得注意的是第二步中，生成的多媒体列表文件music.lst一定要与要播放的多媒体文件保存在同一个目录中，否则mplayer播放时会有找不到文件的错误提示。
　　
　　 如果要删除一些不想听的多媒体文件，则用编辑器打开music.lst列表文件，删除对应的文件名即可，保存时要注意一行一个文件名，不能有空行。
　　
　　 如果要增加文件，执行命令echo filename >> music.lst即可，即可将新增的文件名追加在music.lst列表文件末。

兄弟BROTHER MFC7340打印机清零方法

硒鼓是鼓粉分离的，官方给出的硒鼓使用寿命12000张，但一般可以打印到25000张左右，到25000时机器可能会提示硒鼓错误，让你按使用说明书上的什么什么东东操作…

以下两种清零方法可以解决机器：硒鼓将用尽、硒鼓寿命为0%、硒鼓错误、计数器清零等问题。

1、粉盒清零（一般加粉时都可以操作）

步骤：

1、打开机器前盖取出硒鼓

2、取下粉盒边盖上的三个螺丝（注意别把里面的齿轮搞掉了）

3、将盖板上面的白色（或黑色的）拨片拨上去就行(逆时针转到另一头）

4、装回硒鼓放入机器就OK了

2、机器清零（提示硒鼓错误时可以按此操作）

步骤：

1、关闭电源

2、按住菜单键，打开电源，待机器面板上的3灯全亮

3、按74，出来一串数字，用笔记下，按退出

4、按90，按28，按64

5、关闭电源

6、重复步骤 2

7、按74，输入你刚才记下的数字，确认，按96

8、OK!再看看你是硒鼓寿命，变成100%了，页码计数器也变为0了！

In one of our previous article we have posted an instructional guide on how to secure your Debian/Ubuntu based VPS using IPTABLES/Netfilter.

In the following article we are adding a blacklist to the firewall script which will allow you to block any abusive IP addresses or ranges of IPs in your Debian or Ubuntu based virtual server.

What is iptables?

It is is a user space application program that allows a system administrator to configure the tables provided by the Linux kernel firewall (implemented as different Netfilter modules) and the chains and rules it stores.

Before proceeding any further, make sure you read the article on how to secure/design the firewall in your linux vps. This includes:

Flushing the old firewall rules
Determining service ports
Setting-up default policies
Setting-up your firewall rules
Saving your firewall rules
BLOCKING IPs USING IPTABLES
To block some abusive IP address or range of IPs, you can use the following iptables rules:
## iptables -I INPUT -s 1.2.3.4 -j DROP
## iptables -I INPUT -s 1.2.0.0/16 -j DROP

CREATING THE BLACKLIST
For better readability and maintenance, it is a good idea to have all abusing IPs in one particular file, for example /etc/blacklist.ips. This way, you can add the IP addresses or subnets in this file (one IP or subnet per line) and use the fwall-rules script below to block anything listed in this file.

So, create or edit /usr/local/bin/fwall-rules and make it as follows:

#!/bin/bash
#
# iptables firewall script
# http://www.rosehosting.com
#

IPTABLES=/sbin/iptables
BLACKLIST=/etc/blacklist.ips

echo ” * flushing old rules”
${IPTABLES} –flush
${IPTABLES} –delete-chain
${IPTABLES} –table nat –flush
${IPTABLES} –table nat –delete-chain

echo ” * setting default policies”
${IPTABLES} -P INPUT DROP
${IPTABLES} -P FORWARD DROP
${IPTABLES} -P OUTPUT ACCEPT

echo ” * allowing loopback devices”
${IPTABLES} -A INPUT -i lo -j ACCEPT
${IPTABLES} -A OUTPUT -o lo -j ACCEPT

${IPTABLES} -A INPUT -p tcp ! –syn -m state –state NEW -j DROP
${IPTABLES} -A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT

## BLOCK ABUSING IPs HERE ##
#echo ” * BLACKLIST”
#${IPTABLES} -A INPUT -s _ABUSIVE_IP_ -j DROP
#${IPTABLES} -A INPUT -s _ABUSIVE_IP2_ -j DROP

echo ” * allowing ssh on port 5622″
${IPTABLES} -A INPUT -p tcp –dport 5622 -m state –state NEW -j ACCEPT

echo ” * allowing ftp on port 21″
${IPTABLES} -A INPUT -p tcp –dport 21 -m state –state NEW -j ACCEPT

echo ” * allowing dns on port 53 udp”
${IPTABLES} -A INPUT -p udp -m udp –dport 53 -j ACCEPT

echo ” * allowing dns on port 53 tcp”
${IPTABLES} -A INPUT -p tcp -m tcp –dport 53 -j ACCEPT

echo ” * allowing http on port 80″
${IPTABLES} -A INPUT -p tcp –dport 80 -m state –state NEW -j ACCEPT

echo ” * allowing https on port 443″
${IPTABLES} -A INPUT -p tcp –dport 443 -m state –state NEW -j ACCEPT

echo ” * allowing smtp on port 25″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 25 -j ACCEPT

echo ” * allowing submission on port 587″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 587 -j ACCEPT

echo ” * allowing imaps on port 993″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 993 -j ACCEPT

echo ” * allowing pop3s on port 995″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 995 -j ACCEPT

echo ” * allowing imap on port 143″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 143 -j ACCEPT

echo ” * allowing pop3 on port 110″
${IPTABLES} -A INPUT -p tcp -m state –state NEW -m tcp –dport 110 -j ACCEPT

echo ” * allowing ping responses”
${IPTABLES} -A INPUT -p ICMP –icmp-type 8 -j ACCEPT

# DROP everything else and Log it
${IPTABLES} -A INPUT -j LOG
${IPTABLES} -A INPUT -j DROP

#
# Block abusing IPs
# from ${BLACKLIST}
#
if [[ -f “${BLACKLIST}” ]] && [[ -s “${BLACKLIST}” ]]; then
echo ” * BLOCKING ABUSIVE IPs”
while read IP; do
${IPTABLES} -I INPUT -s “${IP}” -j DROP
done < <(cat “${BLACKLIST}”) fi # # Save settings # echo ” * SAVING RULES” if [[ -d /etc/network/if-pre-up.d ]]; then if [[ ! -f /etc/network/if-pre-up.d/iptables ]]; then echo -e “#!/bin/bash” > /etc/network/if-pre-up.d/iptables
echo -e “test -e /etc/iptables.rules && iptables-restore -c /etc/iptables.rules” >> /etc/network/if-pre-up.d/iptables
chmod +x /etc/network/if-pre-up.d/iptables
fi
fi

iptables-save > /etc/fwall.rules
iptables-restore -c /etc/fwall.rules

make sure the script is executable by adding an ‘x’ bit to it:
chmod +x /usr/local/bin/fwall-rules
APPLYING THE RULES
To apply the firewall rules and block the abusers, you need to just execute the fwall-rules script and that’s it.

## fwall-rules
* flushing old rules
* setting default policies
* allowing loopback devices
* allowing ssh on port 5622
* allowing ftp on port 21
* allowing dns on port 53 udp
* allowing dns on port 53 tcp
* allowing http on port 80
* allowing https on port 443
* allowing smtp on port 25
* allowing submission on port 587
* allowing imaps on port 993
* allowing pop3s on port 995
* allowing imap on port 143
* allowing pop3 on port 110
* allowing ping responses
* BLOCKING ABUSIVE IPs
* SAVING RULES

[download id=”8″]

apt-get install ocaml camlp4-extra
git clone https://github.com/OCamlPro/opam.git
cd opam
./configure
make
sudo make install

apt-get install m4 libcurl4-gnutls-dev libfuse-dev libsqlite3-dev
opam init //**if error( opam init https://opam.ocaml.org/1.1 )
opam update
opam install google-drive-ocamlfuse

安装成功后，进入Google Project建立一个Project
https://console.developers.google.com/project

进入项目的API设置开启Drive API

建立一个OAuth验证ID

建立项目的Client ID

记录下这两个生成的参数做稍后使用

进入/root/.opam/system/bin/目录绑定项目
cd /root/.opam/system/bin/
./google-drive-ocamlfuse -headless -label googledrive -id ##Client ID##.apps.googleusercontent.com -secret ##secret key##
执行完上述指令会返回一个https的网址在浏览器粘贴到浏览器后会进入google页面询问是否允许访问该项目，选accept然后记录下浏览器页面返回的密码，粘贴进去回车即可。
进入~/.gdfuse/googledrive
cd ~/.gdfuse/googledrive
nano config
编辑config修改内容例如
verification_code= [key returned from browser]
client_id= [eg. 123123231.apps.googleusercontent.com]
client_secret= [eg. ASDQWEWGSD!$@#@#ASD]
完成配置加载Google Drive远端存储到本地/googledrive

mkdir /googledrive
cd ~/.opam/system/bin
./google-drive-ocamlfuse -label googledrive /googledrive

if you get swapon failed: Operation not permitted Error even if you run as root it is because in your VPS swap creation is not allowed follow below steps to Create Fake Swap in OpenVZ VPS

[root@server] free -m total used free Mem: 4096 104 3991 -/+ buffers/cache: 104 3991
Swap: 0 0 0

create shell script file add lines like below
[root@server] vi fakeswap.sh

#!/bin/bash
SWAP=”${1:-512}”
NEW=”$[SWAP*1024]”; TEMP=”${NEW//?/ }”; OLD=”${TEMP:1}0″
umount /proc/meminfo 2> /dev/null
sed “/^Swap\(Total\|Free\):/s,$OLD,$NEW,” /proc/meminfo > /etc/fake_meminfo
mount –bind /etc/fake_meminfo /proc/meminfo
free -m

[root@server] chmod +x fakeswap.sh
[root@server] sh fakeswap.sh [root@server] free -m total used free Mem: 4096 104 3991 -/+ buffers/cache: 104 3991 Swap: 512 0 512 to create 1024MB Swap run like below [root@server] sh fakeswap.sh 1024 [root@server] free -m total used free Mem: 4096 104 3991 -/+ buffers/cache: 104 3991 Swap: 1024 0 1024 – See more at: http://linux-problem-solver.blogspot.sg/2013/08/create-fake-swap-in-openvz-vps-if-you-get-swapon-failed-operation-not-permitted-error.html#sthash.Eeknzpcf.dpuf

apt-get install shorewall
cp /usr/share/doc/shorewall/examples/one-interface/interfaces /etc/shorewall/interfaces
cp /usr/share/doc/shorewall/examples/one-interface/policy /etc/shorewall/policy
cp /usr/share/doc/shorewall/examples/one-interface/rules /etc/shorewall/rules
cp /usr/share/doc/shorewall/examples/one-interface/zones /etc/shorewall/zones

Now open /etc/shorewall/policy file and change the line:
net all DROP info
removing info directive given it fills the system logs:
net all DROP
Now open /etc/shorewall/rules and add the following rules at the bottom of the file:
HTTP/ACCEPT net $FW
SSH/ACCEPT net $FW
FTP/ACCEPT net $FW
# real apache since varnish listens on port 80
#ACCEPT net $FW tcp 8080
ACCEPT net:192.168.1.10 $FW TCP 22

vi /etc/shorewall/shorewall.conf STARTUP_ENABLED=No —— STARTUP_ENABLED=Yes
vi /etc/default/shorewall startup=0 —— startup=1

/etc/init.d/shorewall start

apt-get –purge remove exim4
apt-get –purge remove exim4-base
dpkg -l | grep exim
dpkg -P exim_name