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In Docker, what's the difference between a container and an image? [duplicate]
... opt proc root run sbin srv sys tmp usr var
root@48cff2e9be75:/# cat > foo
This is a really important file!!!!
root@48cff2e9be75:/# exit
Don't expect that file to stick around when you exit and restart the image. You're restarting from exactly the same defined state as you started in ...
Link to reload current page
...ortunately, it does not work in IE. From: msdn.microsoft.com/en-us/library/cc848861%28v=vs.85%29.aspx - If HREF is specified as a blank value (href="" or href=), executing the link might display the directory containing the current document, or it might generate an error, depending on other elements...
Assignment in an if statement
...effects within a condition, but the alternatives usually involve code duplication, and when you know this pattern it's easy to get right.
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Decoding and verifying JWT token using System.IdentityModel.Tokens.Jwt
...", located at
http://code.msdn.microsoft.com/AAL-Native-App-to-REST-de57f2cc
Alternatively, the JwtSecurityToken class has additional methods that are not on the base SecurityToken class, such as a Claims property that gets the contained claims without going via the ClaimsIdentity collection. It a...
When to use the different log levels
...messages [, i.e. messages logged for the sake of tracing].
"proxy: FTP: control connection complete"
"proxy: CONNECT: sending the CONNECT request to the remote proxy"
"openssl: Handshake: start"
"read from buffered SSL brigade, mode 0, 17 bytes"
"map lookup FAILED: map=rewritemap key...
List files in local git repo?
...ng the ID/SHA-1 of the directory that you want to explore and then use git cat-file -p [ID/SHA-1 of directory]. For example:
git cat-file -p 14032aabd85b43a058cfc7025dd4fa9dd325ea97
100644 blob b93a4953fff68df523aa7656497ee339d6026d64 glyphicons-halflings-regular.eot
100644 blob 94fb5490a2ed10b2...
How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
I have install Mountain Lion (Mac OS X 10.8) and now gcc doesn't seem to be available anymore. I've also installed Xcode 4.4 so there is no more /Developer directory.
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What's the opposite of 'make install', i.e. how do you uninstall a library in Linux?
...package has been correctly configured for an make uninstall option. Clarification: what he wants to do is to enable some kind of management for packages that works for things he compiled himself.
– Nisse
Jul 27 '13 at 6:11
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“Insert if not exists” statement in SQLite
...roceed.
I would advice that you instead design your table so that no duplicates are allowed as explained in @CLs answer below.
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CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...或就近访问。互联网上传递的内容，大部分为重复的Web/FTP数据，Cache服务器及应用Caching技术的网络设备，可大大优化数据链路性能，消除数据峰值访问造成的结点设备阻塞。Cache服务器具有缓存功能，所以大部分网页对象（Web pa...