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SSH configuration: override the default username [closed]
..., User jdoe at the top, and then define Host example, HostName abc.example.com, User root, attempting ssh example will be the same as if you entered ssh jdoe@abc.example.com. In order to define ssh defaults (ie. User root), Host * directive needs to be at the bottom of config file.
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How to convert an iterator to a stream?
...ous class (there are a few subtle differences, such as scope and how it is compiled) but it does behave similarly in this case.
– assylias
Jan 13 '15 at 13:53
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Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
...uite a few issues:
It can be broken out of. If you are going to actually compile or run untrusted C programs on your system, you are especially vulnerable to this issue. And if your students are anything like mine, someone WILL try to break out of the jail.
You have to create a full independent fi...
Use tnsnames.ora in Oracle SQL Developer
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Windows shortcut != symbolic link. howtogeek.com/howto/16226/…
– Matt Lachman
Apr 21 '14 at 18:01
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ExecJS and could not find a JavaScript runtime
...his answer and took therubyracer out of my gemfile. See also stackoverflow.com/questions/7092107/….
– Mark Berry
Jan 17 '12 at 1:58
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When and how should I use a ThreadLocal variable?
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One possible (and common) use is when you have some object that is not thread-safe, but you want to avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance of the object.
F...
MySQL: Large VARCHAR vs. TEXT?
...large for that, it overflows to additional pages. See mysqlperformanceblog.com/2010/02/09/blob-storage-in-innodb for a detailed explanation.
– Bill Karwin
Jan 1 '14 at 21:43
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See my work log in jira
...e report: it defaults to the past week. So you can bookmark the report and come back later for a report of the last week.
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What are five things you hate about your favorite language? [closed]
...quivalent to using eval() and so hideously wrong I have never used it (see http://www.php.net/create_function).
3) A try/catch system which can only catch about 80% of errors that might occur.
4) Regex support just as lame as lambda support because it has to be written inside regular strings, maki...
How can I format a nullable DateTime with ToString()?
...alue.ToString("yyyy-MM-dd hh:mm:ss") : "n/a");
EDIT: As stated in other comments, check that there is a non-null value.
Update: as recommended in the comments, extension method:
public static string ToString(this DateTime? dt, string format)
=> dt == null ? "n/a" : ((DateTime)dt).ToStri...