To highlight the current line use

    :set cursorline

To highlight the current column use

    :set cursorcolumn

The visual appearance of this can be modified. Have a look around `:help hl-CursorLine` or `hl-CursorColumn`.

See [the Vim wiki on this subject][1] for the complete story.

I especially found the following bit handy (when working with more than one window).    

    autocmd WinEnter * setlocal cursorline
    autocmd WinLeave * setlocal nocursorline

Only highlight the current line in the active window.

  [1]: http://vim.wikia.com/wiki/Highlight_current_line

&lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;V&lt;/kbd&gt; puts you in *visual mode*, highlighting the entire line.

What I *seem* to understand:

`POSIX AIO` APIs are prototyped in `&lt;aio.h&gt;` and you link your program with librt(-lrt), while the `libaio` APIs in `&lt;libaio.h&gt;` and your program is linked with libaio (-laio).

What I can&#39;t figure out:

1.Does the kernel handle the either of these methods differently?

2.Is the `O_DIRECT` flag mandatory for using either of them?
 
As mentioned in [this post][1], libaio works fine without `O_DIRECT` when using `libaio`.Okay,understood but:

According to R.Love&#39;s *Linux System Programming* book, Linux supports *aio* (which I assume is POSIX AIO) on regular files *only* if opened with `O_DIRECT`.But a small program that I wrote (using aio.h,linked with -lrt) that calls `aio_write` on a file opened without the `O_DIRECT` flag works without issues.


  [1]: https://stackoverflow.com/questions/6918530/linux-kernel-aio-functionality

Difference between POSIX AIO and libaio on Linux?

I need to encrypt a string using a public key (.pem file), and then sign it using a private key (also a .pem).

I am loading the .pem files fine:

    publicCert = fs.readFileSync(publicCertFile).toString();

But after hours of scouring Google, I can&#39;t seem to find a way to encrypt data using the public key. In PHP I simply call openssl_public_encrypt(), but I don&#39;t see any corresponding function in Node.js or in any modules.






Encrypting data with a public key in Node.js

What is the best way to highlight the whole current line in VIM? In some IDEs I am able to set some sort of 20% opacity of the line I am editing, this is great to find where I am rather quickly.

VIM Highlight the whole current line

<p>What is the best way to highlight the whole current line in VIM? In some IDEs I am able to set some sort of 20% opacity of the line I am editing, this is great to find where I am rather quickly.</p>


I am running into [several problems](https://stackoverflow.com/questions/8756459/is-there-any-plugin-way-to-manage-multiple-projects-in-vim) because vim&#39;s tabs are, for the lack of a better term, god awful. I want to start using multiple Gnome tabs instead, each with a different instance of vim. Everything should work fine, however, only the system buffer `+` can be used to share text. This makes all the commands two key strokes longer:

&lt;kbd&gt;y&lt;/kbd&gt; &lt;kbd&gt;y&lt;/kbd&gt; becomes &lt;kbd&gt;&quot;&lt;/kbd&gt;  &lt;kbd&gt;+&lt;/kbd&gt;  &lt;kbd&gt;y&lt;/kbd&gt;  &lt;kbd&gt;y&lt;/kbd&gt;

&lt;kbd&gt;y&lt;/kbd&gt; &lt;kbd&gt;w&lt;/kbd&gt; becomes &lt;kbd&gt;&quot;&lt;/kbd&gt;  &lt;kbd&gt;+&lt;/kbd&gt;  &lt;kbd&gt;y&lt;/kbd&gt;  &lt;kbd&gt;w&lt;/kbd&gt;

&lt;kbd&gt;d&lt;/kbd&gt; &lt;kbd&gt;&#39;&lt;/kbd&gt; &lt;kbd&gt;k&lt;/kbd&gt; becomes &lt;kbd&gt;&quot;&lt;/kbd&gt;  &lt;kbd&gt;+&lt;/kbd&gt;  &lt;kbd&gt;d&lt;/kbd&gt; &lt;kbd&gt;&#39;&lt;/kbd&gt; &lt;kbd&gt;k&lt;/kbd&gt;

This is especially so when one considers that a simply yank/paste operation like so

&lt;kbd&gt;y&lt;/kbd&gt; &lt;kbd&gt;y&lt;/kbd&gt; &lt;kbd&gt;p&lt;/kbd&gt; 

becomes 

&lt;kbd&gt;&quot;&lt;/kbd&gt;  &lt;kbd&gt;+&lt;/kbd&gt;  &lt;kbd&gt;y&lt;/kbd&gt;  &lt;kbd&gt;y&lt;/kbd&gt;  &lt;kbd&gt;&quot;&lt;/kbd&gt;  &lt;kbd&gt;+&lt;/kbd&gt;  &lt;kbd&gt;p&lt;/kbd&gt;

Is there anyway to instruct vim to always use the system clipboard(s)?

**EDIT** [see Here](https://stackoverflow.com/questions/8756459/is-there-any-plugin-way-to-manage-multiple-projects-in-vim) for more information on using multiple instances of vim across Gnome Terminal Tabs

Can vim use the system clipboard(s) by default?

I know how to use the `v` command in vim, but I need something which will delete an entire line and it should allow me to paste the same line somewhere else.

How to cut an entire line in vim and paste it?

Of course the fact that you can refactor on IDEs is priceless for many, I hardly ever do it when I am coding but I may try to do it when editing some one else&#39;s source. How do you accomplish such a trivial task across multiple files in Vim?

I found [this plugin](https://github.com/ecomba/vim-ruby-refactoring) for refactoring Ruby, but how about &quot;any&quot; language?

Refactoring in Vim

If I add a file to the same directory opened in `NERDTree`, the only way I can see the file added is if I quit vim and start it again . 

Is there a way I can reload the files in `NERDTree`?

NERDTree reload new files

Is there a command which shows what was the last command in normal mode?

Suppose I accidently hit random key and got some unexpected result.
Sure I can undo it, but could I reveal what key was pressed and how it was interpreted?


Vim &quot;show my last command&quot; command?

I&#39;m using a navbar for the standard nav stuff and i&#39;d like to include a button for Sign in and Sign up.

The I&#39;m using an `a` tag with the `btn btn-large btn-success` classes and by default it appears the navbar does not accommodate the use of nested `btn`s.

The result is something like this: 

![default without hover][1]


And when hovered over, it comes out as: 

![hovered][2]



My question is basically: Am i doing this wrong?  Is there something I&#39;m missing?

Thought i&#39;d ask before I redefine CSS classes for .btn. within a navbar.

Thanks. 

  [1]: http://i.stack.imgur.com/RTnxy.png
  [2]: http://i.stack.imgur.com/9kuSi.png

Twitter Bootstrap: What is the correct way to use the `.btn` class within a navbar?

Okay, so I&#39;m developing an Android app that utilises a ViewPager to display pages.

Within each page, I have a set of buttons to use for navigating between pages (in addition to the swiping between pages). These buttons are for &quot;first page&quot;, &quot;previous page&quot;, &quot;next page&quot; and &quot;last page&quot;.

What I can&#39;t figure out how to do is engineer a mechanism to enable a page change on a button click.

Anyone have any ideas?

ETA: To better explain the setup, the buttons are declared within each page&#39;s layout, and are inflated with the rest of the layout within the PagerAdapter. My problem is that I can&#39;t reference the ViewPager from within the PagerAdapter. Or at least, I can&#39;t think of a way to do it.

Android ViewPager Prev/Next Button

I tried searching for this, but there&#39;s a different feature in SublimeText that people call &quot;preview&quot;, so I couldn&#39;t find any relevant info.

How do I disable the preview navigation image that&#39;s displayed within SublimeText2 when a document is open? Also, what is this feature called?

![enter image description here][1]

  [1]: http://i.stack.imgur.com/WOWgj.png

Sublime Text 2: disable document preview

I am currently learning JSF and was rather amazed and puzzled when I realized that whenever we use `&lt;h:form&gt;`, the standard behavior of JSF is to always show me the URL of the _previous_ page in the browser, as opposed to the URL of the _current_ page. 

I understand that this has to do with the way JSF always posts a form to the same page and then just renders whatever page the controller gives it back to the browser which doesn&#39;t know the page location has changed.

**It seems like JSF has been around for long enough that there must be a clean, solid way to deal with this. If so, would you mind sharing?** 

I have found various workarounds, but sadly nothing that seems like a real solid solution.

- Simply accept that the URL is misleading.
- Append `&quot;?faces-redirect=true&quot;` to the return value of _every_ bean&#39;s action and then
    - figure out how to replace `@RequestScoped` with something else (Flash Scopes, CDI conversation, @SessionScoped, ...).
    - accept to have two HTTP round trips for every user action.
- Use some method (e.g. 3rd party library or custom code) to hide the page name in the URL, always using the same generic URL for every page.


If `&quot;?faces-redirect=true&quot;` is as good as it gets, is there a way do configure an entire application to treat all requests this way?

How to navigate in JSF? How to make URL reflect current page (and not previous one)

I&#39;ve been following [the navigation drawer guide by Google][1] and I&#39;d like to add it to an Activity with tabs and gestures.

I&#39;d like to disable the gesture to open the navigation drawer, does anyone have any idea how to do this? 

  [1]: http://developer.android.com/training/implementing-navigation/nav-drawer.html

disable the swipe gesture that opens the navigation drawer in android

I just started blogging using jekyll. I write my posts in markdown. Now,  I want to include a youtube video in my post. How can I do this?

Also, I dont really like the pygments highlighting provided by jekyll by default. Is there anyway I can change  this to some other style? If yes, can you point me to some nice styles/plugins? 

how to include video in jekyll markdown blog

I have two fragments. The first with buttons inside, the other with a `ListView` inside (ListFragment). 

I would like the first fragment (thanks to its buttons) to allow the user to browse the ListView which is in the second fragment.

So I want the ListView to be controlled by the first fragment with buttons.

I&#39;ve no problem communicating between fragment (sending orders from 1st fragment to the 2nd), but I don&#39;t know how to tell my ListView to select (programmatically) a particular list item.

What kind of ListView should I use and how can I tell the ListView to Select/Highlight/Focus one of its items?

I am in touch mode as the user presses on the buttons of the 1st fragment.

Should I use `setFocusableInTouchMode(true)` or `setChoiceMode(ListView.CHOICE_MODE_SINGLE)` or something else?

Programmatically select item ListView in Android

What I am attempting to do is to highlight a div with a certain id, when It has been referred to by an anchor on another page IE:

User clicks link `href=&quot;qw.html#test&quot;`, when the page is loaded, then the div with the `id=&quot;test&quot;`
is highlighted so that the user can see it clearly.

I&#39;m sure that I&#39;ve seen a CSS3 example where a div is highlighted if it was linked to.
Or was it JavaScript?



CSS- Highlight a div when the id is linked to using an anchor?

I was trying to find a way to highlight a selected block of code in Notepad++ like Microsoft Word allows you to do for a document. Is this possible?

Manually highlight selected text in Notepad++

There is a blue highlight that appears whenever a Div that has the cursor:pointer property applied is touched in Chrome.
How can we get rid of it?

I have tried the following:

    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

But they do not affect the blue highlighting on press of a cursor.

Content Type	Original Author	Original Content on Stackoverflow
Question	Helmut Granda	View Question on Stackoverflow
Solution 1 - Vim	Benjamin Bannier	View Answer on Stackoverflow
Solution 2 - Vim	Niels Bom	View Answer on Stackoverflow
Solution 3 - Vim	Andrew Cowenhoven	View Answer on Stackoverflow

VIM Highlight the whole current line

Vim Problem Overview

Vim Solutions

Solution 1 - Vim

Solution 2 - Vim

Solution 3 - Vim

Encrypting data with a public key in Node.js

Difference between POSIX AIO and libaio on Linux?

Attributions