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获取TinyMce编辑器的内容

由于TinyMce编辑器的内容不能用js直接获取，否则获取的永远是初始化时候的值，必须使用它们内部提供的函数。

函数如下：

来源: http://www.ourys.com/?s=tinymce

Posted in TinyMce, 技术.

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By C1G – 2010/11/10

foreach 使用”引用”遍历数组时的问题

$testarr = array(‘a’,’b’,’c’); foreach( $testarr as $k=>&$v ) { echo $k.”=>”.$v.”
“; } echo “——-
“; foreach( $testarr as $k=>$v ) { echo $k.”=>”.$v.”
“; }

你可能以为结果为

0=>a 1=>b 2=>c ——- 0=>a 1=>b 2=>c

实际输出是

0=>a 1=>b 2=>c ——- 0=>a 1=>b 2=>b

这是什么道理?

Posted in PHP, 技术.

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rev="post-1129" 1 comment

By C1G – 2010/10/20

curl_setopt(): CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set in

当系统开启safe_mode和 open_basedir,在程序中使用以下语句 curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); 并且遇到301,302状态吗时会出现错误

[11-Oct-2010 14:17:41] PHP Warning: curl_setopt(): CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set in msn.class.php on line 819 解决方法是在curl语句用不使用curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true),在php函数中自定义一个函数 curl_redir_exec函数 curl_redir_exec curl_redir_exec($ch)替换curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true)语句 参考: http://spoint.babyshoot.cn/archives/2009/11/curlopt-php.html http://www.php.net/manual/en/function.curl-setopt.php

Posted in PHP, 技术.

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rev="post-1125" 1 comment

By C1G – 2010/10/11

FireFox 3.6与discuz7.2 兼容问题

当firefox升级到3.6时，论坛登录框的不能显示,发贴时不能勾选源码按钮. 

编辑include/js/common.js

BROWSER.firefox = document.getBoxObjectFor &&  USERAGENT.indexOf(‘firefox’) != -1 && USERAGENT.substr(USERAGENT.indexOf(‘firefox’) + 8, 3);

去掉 document.getBoxObjectFor && 

保存，然后到后台更新缓存.

参考: http://www.discuz.net/thread-1553662-1-1.html http://www.discuz.net/thread-1553664-1-1.html

Posted in Discuz/Uchome/Ucenter, 其它.

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By C1G – 2010/09/10

备份时内核出错Unable to handle kernel NULL pointer dereference at virtual address

备份十几万图片文件时碰到内核出错，reboot等命令也无法重启。

重启后再试还是出错。

SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts Losing some ticks… checking if CPU frequency changed. Unable to handle kernel NULL pointer dereference at virtual address 000000f8  printing eip: c02c4ecb *pde = 00004001 Oops: 0000 [#1] SMP Modules linked in: autofs4 sunrpc ipt_state iptable_filter iptable_nat ip_conntrack iptable_mangle ip_tables dm_mod button battery ac uhci_hcd ehci_hcd tg3 floppy ext3 jbd ata_piix libata aic79xx sd_mod scsi_mod CPU:    1 EIP:    0060:[]    Not tainted VLI EFLAGS: 00010046   (2.6.9-5.ELsmp) EIP is at _spin_lock_irqsave+0x7/0x45 eax: 000000f4   ebx: 00000246   ecx: c2024d60   edx: 00000200 esi: 000000f4   edi: 00000283   ebp: f7fecf68   esp: f7fecf50 ds: 007b   es: 007b   ss: 0068 Process khelper (pid: 14, threadinfo=f7fec000 task=f7f67230) Stack: 000000f0 000000f4 c011cfa7 e191be40 e191be44 00000283 f7eb2000 c012e837        e191be80 c012e498 ffffffff ffffffff 00000001 00000000 c011ce93 00010000        00000000 c0400e20 c201cd60 00000000 00000000 f7f67230 c011ce93 00100100 Call Trace:  [] complete+0x12/0x3d  [] worker_thread+0x168/0x1d5  [] __call_usermodehelper+0x0/0x41  [] default_wake_function+0x0/0xc  [] default_wake_function+0x0/0xc  [] worker_thread+0x0/0x1d5  [] kthread+0x73/0x9b  [] kthread+0x0/0x9b  [] kernel_thread_helper+0x5/0xb Code: 6c 00 6c 74 2d c0 0f b6 02 84 c0 7e 08 0f 0b 6d 00 6c 74 2d c0 86 0a c3 f0 81 00 00 00 00 01 c3 f0 ff 00 c3 56 89 c6 53 9c 5b fa 78 04 ad 4e ad de 74 18 ff 74 24 08 68 5f 83 2d c0 e8 24 bd

Posted in 备份, 技术.

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By C1G – 2010/09/07

网站服务器所使用的各 Linux 发行版统计数据对比分析

网站服务器所使用的各 Linux 发行版统计数据对比分析： CentOS 增长最快，Debain 平稳发展，Ubuntu 稍有提升 Red Hat和Fedora略有下降

 

Historical trends in the usage of Linux versions for websites

This report shows the historical trends in the usage of Linux versions since October 2009.

  2009 1 Oct 2009 1 Nov 2009 1 Dec 2010 1 Jan 2010 1 Feb 2010 1 Mar 2010 1 Apr 2010 1 May 2010 1 Jun 2010 1 Jul 2010 1 Aug 2010 1 Sep 2010 3 Sep
CentOS 23.4% 22.0% 21.6% 22.1% 22.8% 23.5% 24.9% 25.8% 27.5% 29.9% 31.8% 33.3% 33.4%
Debian 26.5% 28.0% 28.5% 28.6% 28.4% 28.3% 28.1% 28.1% 27.7% 27.0% 26.5% 26.0% 26.0%
Red Hat 21.0% 21.4% 21.7% 21.5% 21.1% 20.6% 19.7% 19.2% 18.4% 17.5% 16.7% 16.1% 16.1%
Ubuntu 8.8% 8.7% 8.8% 9.0% 9.2% 9.5% 9.8% 9.9% 10.0% 10.1% 10.1% 10.2% 10.2%
Fedora 11.3% 11.0% 10.7% 10.3% 10.0% 9.7% 9.2% 8.9% 8.6% 8.1% 7.8% 7.5% 7.4%
SuSE 6.2% 6.1% 6.0% 5.9% 5.6% 5.6% 5.3% 5.3% 5.1% 4.8% 4.6% 4.5% 4.5%
Gentoo 2.6% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.4% 2.4% 2.3% 2.2% 2.2% 2.1%
Mandriva 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2% 0.2%
Turbolinux         0.1% 0.1% 0.2% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1%

The diagram shows only Linux versions with more than 1% usage.

Historical trends in the usage of Linux versions

来源:

http://w3techs.com/technologies/history_details/os-linux

Posted in LINUX, 技术.

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rev="post-1118" No comments

By C1G – 2010/09/03

cacti 监控 postfix mail server

1.下载 postfix_mailserver.tar.gz http://forums.cacti.net/download.php?id=4091 #wget http://forums.cacti.net/download.php?id=4091

2.解压得到两个文件 #tar zxvf postfix_mailserver.tar.gz cacti_host_template_postfix_mailserver.xml fetch_mail_statistics.pl

3.测试程序文件 #chmod 0775 fetch_mail_statistics.pl #cp fetch_mail_statistics.pl /usr/local/postfix/libexec/ #cd !$

/var/log/maillog 为mail日志文件 /var/log/mailstats.db 为程序存放的数据文件 1.3.6.1.4.1.2021.255 为snmp用的oid

#./fetch_mail_statistics.pl /var/log/maillog /var/log/mailstats.db .1.3.6.1.4.1.2021.255 -n .1.3.6.1.4.1.2021.255 .1.3.6.1.4.1.2021.255.0 integer 3

有数字输出就是正确了

4.安装配置snmp snmp的安装和基本配置参考

#vi /usr/local/etc/snmp/snmpd.conf #或者这个位置vi /etc/snmp/snmp.conf

com2sec local localhost c1gprivate group MyROGroup v1 local group MyROGroup v2c local view all included .1 80 access MyROGroup “” any noauth exact all none none #postfix pass .1.3.6.1.4.1.2021.255 /usr/local/postfix/libexec/fetch_mail_statistics.pl /var/log/maillog /var/log/mailstats.db .1.3.6.1.4.1.2021.255

重启snmp

5.snmpwalk测试 #snmpwalk -v 1 -c c1gprivate localhost .1.3.6.1.4.1.2021.255

UCD-SNMP-MIB::ucdavis.255.0 = INTEGER: 3 UCD-SNMP-MIB::ucdavis.255.1 = INTEGER: 2 UCD-SNMP-MIB::ucdavis.255.2 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.3 = INTEGER: 2 UCD-SNMP-MIB::ucdavis.255.4 = INTEGER: 1 UCD-SNMP-MIB::ucdavis.255.5 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.6 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.7 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.8 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.9 = INTEGER: 0 UCD-SNMP-MIB::ucdavis.255.10 = INTEGER: 0

#snmpwalk -v 2c -c c1gprivate localhost .1.3.6.1.4.1.2021.255.0

UCD-SNMP-MIB::ucdavis.255.0 = INTEGER: 3

出现下面错误请再检查snmpd.conf

#snmpwalk -v 1 -c c1gprivate localhost .1.3.6.1.4.1.2021.255.0 End of MIB #snmpwalk -v2c -c c1gprivate localhost .1.3.6.1.4.1.2021.255.1 UCD-SNMP-MIB::ucdavis.255.1 = No more variables left in this MIB View (It is past the end of the MIB tree)

6.cacti导入postfix模板 在cacti控制后台 Console -> Import Templates 导入cacti_host_template_postfix_mailserver.xml 在Console -> Host Templates 可以看到名为”Postfix Mailserver”的模板

7.创建postfix的监控图像 Console -> Devices 选择被控监的服务器，在”Associated Graph Templates”中添加”ucd/net – Postfix – Mail Transporting ” Console -> Create New Graphs 选择被控监的服务器，勾选”Create: ucd/net – Postfix – Mail Transporting”并保存 Console -> Graph Management 稍后就可以看到图像 cacti_postfix_mail_transporting_graph

其它注意项 1.检查 iptables 是否允许snmp 数据包通过 2.请关闭 selinux (RHEL和centos 会出现这个问题)

参考: http://forums.cacti.net/about6657-0-asc-0.html http://dev.firnow.com/course/6_system/linux/Linuxjs/2008618/126258.html

Posted in Cacti, 技术.

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rev="post-1115" No comments

By C1G – 2010/08/31

RedHat AS4 使用centos源 安装yum

RedHat AS4 安装yum

下载rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/yum-2.4.3-4.el4.centos.noarch.rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/python-elementtree-1.2.6-5.el4.centos.i386.rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/sqlite-3.3.6-2.i386.rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/python-sqlite-1.1.7-1.2.1.i386.rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/python-urlgrabber-2.9.8-2.noarch.rpm http://mirrors.163.com/centos/4/os/i386/CentOS/RPMS/yum-metadata-parser-1.0-8.el4.centos.i386.rpm ftp://ftp.isu.edu.tw/pub/Linux/CentOS/4.8/os/s390/CentOS/RPMS/centos-yumconf-4-4.5.noarch.rpm

安装yum rpm -ivh centos-yumconf-4-4.5.noarch.rpm rpm -ivh sqlite-3.3.6-2.i386.rpm rpm -ivh python-sqlite-1.1.7-1.2.1.i386.rpm rpm -ivh python-urlgrabber-2.9.8-2.noarch.rpm rpm -ivh python-elementtree-1.2.6-5.el4.centos.i386.rpm rpm -ivh yum-metadata-parser-1.0-8.el4.centos.i386.rpm rpm -ivh yum-2.4.3-4.el4.centos.noarch.rpm

配置yum
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS-Base-163.repo
mv CentOS-Base.repo{1,.bak}
vi CentOS-Base-163.repo
把$releasever替换成4
按esc再输入进行替换
1,$s#\$releasever#4/g 保存退出

yum clean all yum list

Posted in linux 维护优化, 技术.

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By C1G – 2010/08/27

linux文字终端下的俄罗斯方块游戏

tetrislogo http://victornils.net/tetris/

linux文字终端下的俄罗斯方块游戏 支持单人，双人及网络对战。

游戏截图 vitetris050-brackets

双人对战截图 vitetris040-unsock5-sm

下载安装 wget http://victornils.net/tetris/vitetris-0.57.tar.gz tar zxvf vitetris-0.57.tar.gz cd vitetris-0.57 ./configure –prefix=/opt/gamevitetris make make install /opt/gamevitetris/bin/tetris

游戏开始的界面

# # # # # # # # # # # # # # ## # # # # # # # # # # # # 1-Player Game vitetris 0.57 2-Player Game Netplay Written by Mode [A-type] Victor Nilsson ————- 2007-2009 Options Highscores

Posted in Linux游戏.

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By C1G – 2010/08/26

ssh连接时清除终端shell乱码方法

当用cat或tail命令显示一个二进制文件后终端可能会变成乱码

解决方法:

1.输入clean命令或按ctrl+L

2.输入reset命令

3.按ctrl+v再按ctrl+o 会出现个^O再按回车 ctrl+v 表示下一输入为特殊字符 ctrl+o 表示^O 切换为原来字符集

参考： http://www.cyut.edu.tw/~ckhung/b/mi/textmode.php

Posted in linux 维护优化, 技术.

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By C1G – 2010/08/26