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Administration Guide
http://www.huawei.com.cn/enterprise/docinforeader.action?contentId=DOC1000046231&partNo=100112

Configuration File Parameter Decription
http://support.huawei.com/enterprise/docinforeader.action?contentId=DOC1000054623&idPath=7881490|7881504|9864617|19885131|8327343

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Check if value is in column range
=IF(ISNA(VLOOKUP(<single column I value>,<entire column E range>,1,FALSE)),FALSE, TRUE)

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http://cp.c-ij.com/en/contents/3156/03373/index.html
http://www.craftsy.com/project/paper-crafts?page=1
http://global.yamaha-motor.com/yamahastyle/entertainment/papercraft/animal-japan/fukuro/

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# ngrep -W byline -d eth0 port 5060

Capture to file
# ngrep -W byline -d eth0 port 5060 -O capture_file

Show INVITE only
# ngrep -W byline -d eth0 INVITE

HTTP Packets
# ngrep -t '^(GET|POST) ' 'src host 12.13.14.15 and tcp and dst port 80'

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# sox SuperMario.wav -r 8000 -U -c1 SuperMarioUL.wav

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## Configure eth0
#
# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"
NM_CONTROLLED="yes"
ONBOOT=yes
HWADDR=A4:BA:DB:37:F1:04
TYPE=Ethernet
BOOTPROTO=static

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function ping($host, $timeout = 1) {
    /* ICMP ping packet with a pre-calculated checksum */
    $package = "\x08\x00\x7d\x4b\x00\x00\x00\x00PingHost";
    $socket  = socket_create(AF_INET, SOCK_RAW, 1);
    socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0));
    socket_connect($socket, $host, null);
    $ts = microtime(true);
    socket_send($socket, $package, strLen($package), 0);
    if (socket_read($socket, 255)) {
        $result = microtime(true) - $ts;

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Install yajl2

$cd ~
$git clone https://github.com/lloyd/yajl.git
$cd yajl/
$sudo ./configure
$sudo make
$sudo make install
$sudo ln -s /usr/local/lib/libyajl_s.a /usr/lib64/libyajl_s.a

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$./configure --with-yajl=/usr/local/include/yajl

checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for style of include used by make... GNU
checking for gcc... gcc

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On Master:

SELECT
    client_addr,
    sent_offset - (
        replay_offset - (sent_xlog - replay_xlog) * 255 * 16 ^ 6 ) AS byte_lag
FROM (
    SELECT
        client_addr,
        ('x' || lpad(split_part(sent_location,   '/', 1), 8, '0'))::bit(32)::bigint AS sent_xlog,