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How should one go about choosing a default TCP/IP port for a new service?
When developing an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
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How to grant remote access permissions to mysql server for user?
...S;
If name resolution is not going to work, you may also grant access by IP or subnet:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.%'
IDENTIFIED BY 'some_characters'
WITH GRANT OPTION;
FLUSH PRIVILEGES;
MySQL GRANT syntax docs.
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Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...，我们使用 ps 查看进程列表，可以看到卡住的进程状态显示为 D。
man ps 中描述 D 状态是 Uninterruptible Sleep。
Linux 进程有两种睡眠状态：
Interruptible Sleep，可中断睡眠，在 ps 命令中显示 S。处在这种睡眠状态的进程是可以通...
App Inventor 2 字典代码块 · App Inventor 2 中文网
...果要对数据结构执行大量的操作，建议优先使用字典。
显示字典的常见方法是使用 JavaScript 对象表示法 (JSON)，例如：
{
"id": 1,
"name": "Tim the Beaver",
"school": {
"name": "Massachusetts Institute of Technology"
},
"enrolled": true,
"class...
Freeing up a TCP/IP port?
...number' | grep LISTEN
Sample Response :
java 4744 (PID) test 364u IP0 asdasdasda 0t0 TCP *:port-number (LISTEN)
and then execute :
kill -9 PID
Worked on Macbook
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Perform commands over ssh with Python
I'm writing a script to automate some command line commands in Python. At the moment I'm doing calls thus:
13 Answers
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My docker container has no internet
....x.x, then the container will not be able to resolve the domain names into ip addresses, so ping google.com will fail.
Second thing to check is run cat /etc/resolv.conf on the host machine. Docker basically copies the host's /etc/resolv.conf to the container everytime a container is started. So if ...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
... to point your apex domain you'd use an A record pointing to your server's IP. This solution doesn't scale and isn't viable for a cloud platform like Heroku, where multiple and frequently changing backends are responsible for responding to requests.
For subdomains (like www.example.com) you can use...
Get city name using geolocation
...charset=UTF-8"/>
<title>Reverse Geocoding</title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var geocoder;
if (navigator.geolocation) {
navigator.geolocation.getCurr...
Do you get charged for a 'stopped' instance on EC2? [closed]
...ine time
Storage space (assumably you store the image on S3 [EBS])
Elastic IP addresses
Bandwidth
So... if you stop the EC2 instance you will only have to pay for the storage of the image on S3 (assuming you store an image ofcourse) and any IP addresses you've reserved.
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