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Sockets: Discover port availability using Java

... at port is available. It tests whether it is in LISTEN state, whether the IP address is reachable, etc. – Marquis of Lorne Jul 27 '15 at 22:55 1 ...
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Do you have to restart apache to make re-write rules in the .htaccess take effect?

...nswered Sep 27 '08 at 0:31 PiedPiperPiedPiper 5,27911 gold badge2727 silver badges3838 bronze badges ...
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IPC performance: Named Pipe vs Socket

Everyone seems to say named pipes are faster than sockets IPC. How much faster are they? I would prefer to use sockets because they can do two-way communication and are very flexible but will choose speed over flexibility if it is by considerable amount. ...
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What does multicore assembly language look like?

... All the other threads start up in a special sleep state called Wait-for-SIPI. As part of its initialization, the primary thread sends a special inter-processor-interrupt (IPI) over the APIC called a SIPI (Startup IPI) to each thread that is in WFS. The SIPI contains the address from which that t...
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Git says “Warning: Permanently added to the list of known hosts”

...d" when the connection is terminated, which is also really annoying for scripting. – Guss Nov 16 '14 at 13:04 ...
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How can I start PostgreSQL server on Mac OS X?

...ver.log? Make sure tcp localhost connections are enabled in pg_hba.conf: # IPv4 local connections: host all all 127.0.0.1/32 trust Check the listen_addresses and port in postgresql.conf: egrep 'listen|port' /usr/local/var/postgres/postgresql.conf #listen_addresses = 'localhost' #...
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Linux进程与线程总结 [推荐] - C/C++ - 清泛网 - 专注C/C++及内核技术

...间通信外,进程还可以发送信号给进程本身。信号相当于软件中断,如Linux终端有一个程序正在运行,此时按下中断键(Ctrl+C)便可中断此程序的运行,即向该程序的进程发送了一个中断信号(SIGINT),该进程收到信号后,终止...
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Get first n characters of a string

...ordwrap function: function truncate($string,$length=100,$append="…") { $string = trim($string); if(strlen($string) > $length) { $string = wordwrap($string, $length); $string = explode("\n", $string, 2); $string = $string[0] . $append; } return $string; } ...
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OpenSSL and error in reading openssl.conf file

...yName_max = 2 commonName = Common Name (hostname, IP, or your name) commonName_max = 64 # Default values for the above, for consistency and less typing. # Variable name Value #------------------------ ------------------------------ 0.organizatio...
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How to configure git bash command line completion?

... On Linux on most distributions, git completion script is installed into /etc/bash_completion.d/ (or /usr/share/bash-completion/completions/git) when you install git, no need to go to github. You just need to use it - add this line to your .bashrc: source /etc/bash_completio...