May 2014 Archives


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Recieve POST and RePOST data to somewhere. Similar to POST redirection.

$ch = curl_init('');
$postdata = file_get_contents("php://input");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);

Apache mod_bw

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Apache Bandwidth Mod
tar zxf mod_bw-0.92.tgz
apxs -i -a -c mod_bw.c
apxs2 -i -a -c mod_bw.c

httpd.conf 加入 config
例: 來自 不限速, 最大連線數 50, 其他 share 1M Bytes/s (8Mbps), 最大連線數 100,
all 一定要放在最後, 順序有差, 若放在前面, 就會先 match 到而套用設定
mod_bw 的限速都是 by IP group 的, 並非 per IP, 即某 IP group 共用指定頻寬及最大連線數
BandWidthModule On
ForceBandWidthModule On
BandWidth 0
BandWidth all 1000000
MaxConnection 50
MaxConnection all 100 # 超過此數目, 會回應 503: Service Temporarily Unavailable
IP 欄位, 可以用 USER AGENT(支援 RE), 例如 "u:^Mozilla/5(.*)" "u:wget"
若再加入以下可以用 http://yourhost/modbw 看簡單的統計
<location /modbw>
SetHandler modbw-handler

ref. mod_bw v0.92 Readme

Google Geocoding API (地址轉經緯度或經緯度轉地址) 限制只有 2500 筆 (per ip, per day)
實測大概在 2510-2550 筆查詢後就會被鎖
"error_message" : "You have exceeded your daily request quota for this API.",
"results" : [],
"status" : "OVER_QUERY_LIMIT"

PHP mb_send_mail

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PHP mb_send_mail
Subject and message are automatically encoded,
to and additional_headers are not automatically encoded.

mb_send_mail 比 mail 好用很多, 主旨及本文會自動依 mbstring.internal_encoding 處理編碼
但是當 to and additional_headers 有包含 multi-byte 時, multi-byte 部份要用 mb_encode_mimeheader 處理過才會正常
$to=mb_encode_mimeheader("王大頭")." <>";
$additional_headers="From: ".mb_encode_mimeheader("王小頭")." <>\nContent-Type: text/plain; charset=UTF-8";


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Pinglog is a Windows ping wraper that output with timestamp.
它會呼叫原本的 ping, 輸出時會帶出時間, 並產生 Log, 之前叫 pingtest, 此版在 Log 檔名加上 IP

2014-05-12 10:50:11 Pinging with 32 bytes of data:
2014-05-12 10:50:11 Reply from bytes=32 time=4ms TTL=52
2014-05-12 10:50:12 Reply from bytes=32 time=4ms TTL=52
2014-05-12 10:50:13 Reply from bytes=32 time=4ms TTL=52
2014-05-12 10:50:14 Reply from bytes=32 time=4ms TTL=52
2014-05-12 10:50:14 Ping statistics for
2014-05-12 10:50:14 Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
2014-05-12 10:50:14 Approximate round trip times in milli-seconds:
2014-05-12 10:50:14 Minimum = 4ms, Maximum = 4ms, Average = 4ms

Log File: pinglog-

OpenMandriva Linux

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OpenMandriva 算是 Mandriva Linux 的社群分支, 另一個分支是 Mageia
(更早之前叫 Mandrake Linux)
跟 RedHat/CentOS 相同都是用 RPM 套件管理系統(urpmi,urpme,urpmf,urpmq)

剛裝好預設的 /etc/urpmi/urpmi.cfg 是空的, 需先 add media
urpmi.addmedia --distrib --mirrorlist


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在比較新的 Linux, Service Manager 已用 systemctl 取代舊的 chkconfig, service

chkconfig --list = systemctl list-units or systemctl list-unit-files
chkconfig sshd on = systemctl enable sshd.service
chkconfig sshd off = systemctl disable sshd.service
service sshd start = systemctl start sshd.service
service sshd stop = systemctl stop sshd.service
service sshd restart = systemctl restart sshd.service
service sshd status = systemctl status sshd.service


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man ssh /VPN 可以找到相關說明
使用前需設定 sshd_config
PermitTunnel yes
PermitRootLogin yes
可以在 local 及 remote 建立 interface tun0, 也可以綁 IP, 跑路由
這個 Script 可以跟遠端主機建立 SSH VPN tunnel,
default route 走遠端的 IP 出去, 遠端主機需開啟 ip_forward 及 NAT 設定

Old CentOS ISOs

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This page is an archive of entries from May 2014 listed from newest to oldest.

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