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tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解 - C/C++...
...TCP协议不推荐使用的，在某些情况下这个操作可能会带来错误。
5、SYN_SENT状态
SYN_SENT状态表示请求连接，当你要访问其它的计算机的服务时首先要发个同步信号给该端口，此时状态为SYN_SENT，如果连接成功了就变为 ESTABLISHED，...
Random number from a range in a Bash Script
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i dont have shuf on my mac :(
– Viren
Jul 21 '12 at 9:36
4
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Python: Making a beep noise
I'm trying to get the program to give me a beeping noise. I'm on a windows machine. I've looked at http://docs.python.org/library/winsound.html
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Using awk to remove the Byte-order mark
...d will update files without the need for redirections or weird tricks.
On Mac:
This awk solution in another answer works, but the sed command above does not work. At least on Mac (Sierra) sed documentation does not mention supporting hexadecimal escaping ala \xef.
A similar trick can be achieved ...
界面布局组件 · App Inventor 2 中文网
...= new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYear()); 跟着...
psql: FATAL: role “postgres” does not exist
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The key is "I installed the postgres.app for mac." This application sets up the local PostgreSQL installation with a database superuser whose role name is the same as your login (short) name.
When Postgres.app first starts up, it creates the $USER database,
which...
How to resolve symbolic links in a shell script
...path
[Admin addition below from comment by halloleo —danorton]
For Mac OS X (through at least 10.11.x), use readlink without the -f option:
readlink $path
Editor's note: This will not resolve symlinks recursively and thus won't report the ultimate target; e.g., given symlink a that points...
Compare two MySQL databases [closed]
...ility developed by MySQL themselves which you can use on Windows, Linux or Mac - it can also output SQL statements for both data AND schema changes and does a lot more tests than a simple command line diff could determine.
– Jasdeep Khalsa
Oct 4 '14 at 14:22
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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...除了客户端标识符以外，还支持直接封禁用户名甚至 IP 地址，方便用户灵活管理客户端的连接与访问。数据集成Mosquitto 默认通过 MQTT 客户端消息订阅方式实现外部系统对数据的消费。此外，Mosquitto 提供了多个 Mosquitto 之间的数...
How do I set up IntelliJ IDEA for Android applications?
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On a Mac, the Java JDK appears at /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk
– emrys57
Nov 22 '12 at 14:13
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