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What characters are allowed in an email address?

...inal specification of hostnames in RFC 952, mandated that labels could not start with a digit or with a hyphen, and must not end with a hyphen. However, a subsequent specification (RFC 1123) permitted hostname labels to start with digits. No other symbols, punctuation characters, or blank spaces are...
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Please explain the exec() function and its family

...() exemplifies the spirit of UNIX in that it provides a very simple way to start new processes. The fork() call makes a near duplicate of the current process, identical in almost every way (not everything is copied over, for example, resource limits in some implementations, but the idea is to create...
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w3wp process not found

... Restart IIS Right click your site >> Manage Website >> Browse Back into Visual Studio refresh the processes list share | ...
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Navigation in django

...'ve just done my first little webapp in django and I love it. I'm about to start on converting an old production PHP site into django and as part its template, there is a navigation bar. ...
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find -exec cmd {} + vs | xargs

...irst version is safe, the second is not. Your script will not treat a file starting with "-" as an option. So your code should look like this: find . -exec cmd -option1 -option2 -- {} + or find . -print0 | xargs -0 cmd -option1 -option2 -- The first version is shorter and easier to write as ...
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]

...tly Google has changed the guidelines, nothing to find about camel case or starting with letter, _ or $ in the document anymore ... – TheEye Jan 22 '14 at 14:02 34 ...
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Delete all data in SQL Server database

... Its always a good start to the day when you find 6 lines of code that replaces 100s of delete statements! This method works without issue on SQL 2014 Express. – Tommy Apr 8 '15 at 14:21 ...
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Practical uses of git reset --soft?

...Then commit all the changes as one. E.g. > git add -A; git commit -m "Start here." > git add -A; git commit -m "One" > git add -A; git commit -m "Two" > git add -A' git commit -m "Three" > git log --oneline --graph -4 --decorate > * da883dc (HEAD, master) Three > * 92d3eb7 Tw...
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The remote end hung up unexpectedly while git cloning

... Quick solution: With this kind of error, I usually start by raising the postBuffer size by: git config --global http.postBuffer 524288000 (some comments below report having to double the value): git config --global http.postBuffer 1048576000 More information: From the ...
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Deploying just HTML, CSS webpage to Tomcat

I am just getting started on developing a website . All I have at the moment is a HTML page supported by a couple of CSS stylesheets . ...