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Linux: copy and create destination dir if it does not exist
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oops, right. But then, test may be a bash builtin (especially if written as [[ -d "$d" ]]) and mkdir can not ;-)
– Michael Krelin - hacker
Oct 7 '09 at 17:00
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Forward host port to docker container
...e to run a process in a Docker container to listen to the queue and (optionally) write to the database.
5 Answers
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Using sed, how do you print the first 'N' characters of a line?
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211
Don't use sed, use cut:
grep .... | cut -c 1-N
If you MUST use sed:
grep ... | sed -e 's/^\...
Flask raises TemplateNotFound error even though template file exists
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I think Flask uses the directory templates by default. So your code should be
suppose this is y...
In jQuery, how do I get the value of a radio button when they all have the same name?
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@PavanAlapati We cannot really tell you why without seeing your HTML as well; ideally, you would post a new question with your exact HTML snippet and the code you are using. You should only get undefined though, if: The name in the selector does not m...
Logical operators for boolean indexing in Pandas
...Error: The truth value of an array is ambiguous. Use a.empty, a.any() or a.all().
when used as a boolean value. That's because its unclear when it should be True or False. Some users might assume they are True if they have non-zero length, like a Python list. Others might desire for it to be True ...
两大桌面系统之战：Yosemite vs Windows 10 - 操作系统(内核) - 清泛网 - ...
两大桌面系统之战：Yosemite vs Windows 10哪个更好，哪个最好？每个人都有自己的标准，但是 Windows 10 更新中的特性和功能是否足以和 OS X Yosemite 竞争？
全新 Windows 10 操作系统已经在 7 月 29 日正式发布。就和移动行业中的 iO...
How does HTTP file upload work?
...?) always threaded so that they can handle concurrent connections. Essentially, the daemon process that's listening on port 80 immediately hands off the task of serving to another thread/process in order that it can return to listening for another connection; even if two incoming connections arrive...
Notification when a file changes?
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Thanks for the nice example. I'll also point out that you can use the method WaitForChanged on FileSystemWatcher if you are looking for a ...
Should I compile with /MD or /MT?
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By dynamically linking with /MD,
you are exposed to system updates (for good or ill),
your executable can be smaller (since it doesn't have the library embedded in it), and
I believe that at very least the code segment of a DLL is...