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Using node.js as a simple web server
...ecially useful when testing adaptive web sites. Open your HTML page on multiple browsers/window sizes/devices. Save your HTML page and instantly see if your adaptive stuff is working as they all auto refresh.
PhoneGap Developers
If you're coding a hybrid mobile app, you may be interested to know t...
Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
...connect via a Unix-domain socket to a server on the local host, or via TCP/IP to localhost on machines that don't have Unix-domain sockets.
Your OS supports Unix domain sockets, but PostgreSQL's Unix socket that psql needs either doesn't exist or is in a different location than it expects.
Specif...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...在中断体系里分为两种引发方式：
由硬件引发请求
由软件执行调用
然而软件上发起的中断调用还可分为：
引发 exception（异常） 执行 interrupt handler
软件请求执行 system service（系统服务），而执行 interrupt handler
硬件...
Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...会被浪费，更严重这会被认为是网络攻击而导致服务器或IP被封。因此需要通过一些参数配置解决，重试一定次数后仍失败的就放弃发送。postfix发信的频率控制有几个:
smtpd_client_connection_rate_limit=5
ip地址连接的频率控制.
smtpd_cl...
How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]
...sage to the following under [ v3_ca ]:
keyUsage = digitalSignature, keyEncipherment
digitalSignature and keyEncipherment are standard fare for a server certificate. Don't worry about nonRepudiation. It's a useless bit thought up by computer science guys/gals who wanted to be lawyers. It means not...
How to test an Internet connection with bash?
...
Ping your default gateway:
#!/bin/bash
ping -q -w 1 -c 1 `ip r | grep default | cut -d ' ' -f 3` > /dev/null && echo ok || echo error
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How can I start an interactive console for Perl?
...
I wrote a script I call "psh":
#! /usr/bin/perl
while (<>) {
chomp;
my $result = eval;
print "$_ = $result\n";
}
Whatever you type in, it evaluates in Perl:
> gmtime(2**30)
gmtime(2**30) = Sat Jan 10 13:37:04 2004
>...
Convert line-endings for whole directory tree (Git)
...
Piping find to xargs will fail if find matches any files with whitespace, quotes, or other shell meta characters in their path. At the least use find blog -type f -print0 | xargs -0 dos2unix to handle the case of whitespace. Y...
Force unmount of NFS-mounted directory [closed]
...ing (including lsof). I caused the problem by breaking out of a backup script that I'm writing. The script mounts and unmounts the directory, but something about breaking out of rsync messed up my mount. I didn't know about the lazy unmount. It may have been the NAS device causing all the troubl...
How to get current page URL in MVC 3
...ilding. It has some FBXML tags that are interpreted by the facebook javascript that is referenced on the page.
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