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How to check the version before installing a package using apt-get?
...none)
Candidate: 2:2.8.4-2
Version table:
2:2.8.4-2 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
apt-get install -s <package-name>
$ apt-get install -s redis-server
NOTE: This is only a simulation!
apt-get needs root privileges for real ex...
What's the best way to send a signal to all members of a process group?
... And if you modify the format slightly and sort, you get to see all processes nicely grouped and beginning with (potentially) the group parent in each group: ps x -o "%r %p %y %x %c" | sort -nk1,2
– haridsv
Dec 3 '12 at 12:18
...
Does Python have “private” variables in classes?
...ass variables. In Java, nothing prevents you from doing the same if you really want to - after all, you can always edit the source of the class itself to achieve the same effect. Python drops that pretence of security and encourages programmers to be responsible. In practice, this works very nicely...
How do I run a Ruby file in a Rails environment?
...st way is with rails runner because you don't need to modify your script.
http://guides.rubyonrails.org/command_line.html#rails-runner
Just say rails runner script.rb
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How to find the size of localStorage
...ly developing a site that will make use of HTML5's localStorage. I've read all about the size limitations for different browsers. However, I haven't seen anything on how to find out the current size of a localStorage instance. This question seems to indicate that JavaScript doesn't have a built in...
How to change Vagrant 'default' machine name?
...3.
I created a directory called nametest and ran
vagrant init precise64 http://files.vagrantup.com/precise64.box
to generate a default Vagrantfile. Then I opened the VirtualBox GUI so I could see what names the boxes I create would show up as.
Default Vagrantfile
Vagrant.configure('2') do |...
PowerShell Script to Find and Replace for all Files with a Specific Extension
... I would like to add that testing the solutions provided out all worked, but this one was the easiest for readability. I was able to hand this to a co-worker and he could easily understand what was going on. Thanks for the assistance.
– Brandon
Ma...
Get last result in interactive Python shell
...+1
Out[64]: 2
...
In [155]: Out[64] + 3
Out[155]: 5
For more info, see https://jakevdp.github.io/PythonDataScienceHandbook/01.04-input-output-history.html .
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Implement C# Generic Timeout
... call to Abort() can be blocking in rare situations
// http://msdn.microsoft.com/en-us/library/ty8d3wta.aspx
// Hence, it should not be called with the 'lock' as it could deadlock
// with the 'finally' block below.
if (...
MVC 3: How to render a view without its layout page when loaded via ajax?
...ethod anymore, you have to write it by yourself, for example in Extensions\HttpRequestExtensions.cs
using System;
using Microsoft.AspNetCore.Http;
namespace Microsoft.AspNetCore.Mvc
{
public static class HttpRequestExtensions
{
public static bool IsAjaxRequest(this HttpRequest requ...