In command mode:

    [range]j[lines]

For example: here you want to do the whole buffer:

    %j

If you just wanted to do 10 lines from the current cursor position:

    j10

If you don’t want to replace the new lines with spaces, use &lt;kbd&gt;!&lt;/kbd&gt; after &lt;kbd&gt;j&lt;/kbd&gt;.

    %j!
    j!10

And for the uberfancy:

    5j20

It would go to line 5, and join the next 20 lines.





The most intuitive approach would be to use Vim visual line mode, &lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;v&lt;/kbd&gt;. All you have to do is select the content you want to merge to one line, and then press &lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;j&lt;/kbd&gt;.




Use the &lt;kbd&gt;J&lt;/kbd&gt; (uppercase) key.  It will join the lines for you

Check [this](https://stackoverflow.com/questions/391710/in-vim-what-is-the-simplest-way-to-join-all-lines-in-a-file-into-a-single-line) thread for more join options, and see the help page.

For that particular example, the following commands will work:

    :1, 21 j

or

    :%s/\n/ /g

    :g/\[/,/\]/j

Or 

    /^CATEGORIES
    
    :v//-1j

And if you have:
 
    edit &quot;Komputer&quot; 
        ala 
        ala 
    next 
    edit &quot;FortiGate&quot; 
        ala 
        ala 
    next

    :g/edit/,/next/j



Or to join everything from the opening square bracket to the closing square bracket (assuming you have lots of these in your file) and leaving other lines intact,

    :g/\[/,/\]/j

is quick and simple.



My class should extend two classes at the same time:

    public class Preferences extends AbstractBillingActivity {
    
    public class Preferences extends PreferenceActivity {

How to do so?


**Upd**. Since this is not possible, how should I use that [AbstractBillingActivity][1] with Preferences then?

**Upd2**. If I go with interfaces, should I create:

 1. BillingInterface
    
        public interface BillingInterface extends PreferenceActivity, AbstractBillingActivity {
        
        }
    
 2. PreferenceActivity
    
        public interface PreferenceActivity {
        
        }
    
 3. AbstractBillingActivity
    
        public interface AbstractBillingActivity {
            
            	void onCreate(Bundle savedInstanceState);
            
        }

and then 

    public class Preferences implements BillingInterface {

  [1]: http://github.com/robotmedia/AndroidBillingLibrary






Can one class extend two classes?

The following questions are meant for bash and linux only: 

1. Is there a limit on the number of characters in the absolute path name of a file?  
2. Is there a limit on the number of characters for the filename (without extension) only?  

If so, what might these limits be? How can I access them in case they are system specific? 

Limit on file name length in bash

For example, I want to merge such text:

```
CATEGORIES = [&#39;Books&#39;,
        &#39;Business&#39;,
        &#39;Education&#39;,
        &#39;Entertainment&#39;,
        &#39;Finance&#39;,
        &#39;Games&#39;,
        &#39;Healthcare &amp; Fitness&#39;,
        &#39;Lifestyle&#39;,
        &#39;Medical&#39;,
        &#39;Music&#39;,
        &#39;Navigation&#39;,
        &#39;News&#39;,
        &#39;Photography&#39;,
        &#39;Productivity&#39;,
        &#39;Reference&#39;,
        &#39;Social Networking&#39;,
        &#39;Sports&#39;,
        &#39;Travel&#39;,
        &#39;Utilities&#39;,
        &#39;Weather&#39;,
        &#39;All&#39;,  ]
```

into

```
CATEGORIES = [&#39;Books&#39;, &#39;Business&#39;, &#39;Education&#39;, &#39;Entertainment&#39;, &#39;Finance&#39;, &#39;Games&#39;, &#39;Healthcare &amp; Fitness&#39;, &#39;Lifestyle&#39;, &#39;Medical&#39;, &#39;Music&#39;, &#39;Navigation&#39;, &#39;News&#39;, &#39;Photography&#39;, &#39;Productivity&#39;, &#39;Reference&#39;, &#39;Social Networking&#39;, &#39;Sports&#39;, &#39;Travel&#39;, &#39;Utilities&#39;, &#39;Weather&#39;, &#39;All&#39;, ]
```




How can I merge multiple lines into one line in Vim?

For example, I want to merge such text:
<pre><code class="hljs language-ini">CATEGORIES = ['Books',
 'Business',
 'Education',
 'Entertainment',
 'Finance',
 'Games',
 'Healthcare &#x26; Fitness',
 'Lifestyle',
 'Medical',
 'Music',
 'Navigation',
 'News',
 'Photography',
 'Productivity',
 'Reference',
 'Social Networking',
 'Sports',
 'Travel',
 'Utilities',
 'Weather',
 'All', ]
</code></pre>
into
<pre><code class="hljs language-ini">CATEGORIES = ['Books', 'Business', 'Education', 'Entertainment', 'Finance', 'Games', 'Healthcare &#x26; Fitness', 'Lifestyle', 'Medical', 'Music', 'Navigation', 'News', 'Photography', 'Productivity', 'Reference', 'Social Networking', 'Sports', 'Travel', 'Utilities', 'Weather', 'All', ]
</code></pre>

To search forward in Vim for `cake`, I&#39;d type `/cake`, but the cursor jumps to the first match when I press return. **Is there a Vim command analogous to &quot;find next&quot;?**



&quot;Find next&quot; in Vim

**Longtime vim users, do you keep your fingers on`jkl;` or `hjkl` in normal mode?**

Standard touch typing teaches us the home position for the right hand has the index finger on the `j` key, so your fingers are on `jkl;`.

But standard vim motion keys are `hjkl`.


I&#39;m getting back into vim after 10+ years &lt;sup&gt;(omg, I got old when I wasn&#39;t paying attention)&lt;/sup&gt; and find myself gravitating towards `hjkl` ... but that makes it harder to type upper-right letters, braces, etc. I&#39;d like to train myself to use the most efficient/pragmatic method now instead of having to re-train later.

Longtime, hardcore vim users, what&#39;s the best practice?


---

Note:

 1. Bigger overlap with https://stackoverflow.com/questions/1399480/how-do-touch-typists-navigate-in-vi
 1. I think this passes the &quot;subjective&quot; test because it&#39;s about deliberately cultivating an *unconscious best-practice* and not simply about people&#39;s *preference*

Vim users, where do you rest your right hand?

I&#39;m running Vim on a gnome terminal. But the alt key mappings are not working.
&lt;br&gt;For example (this is just an example):

    :imap &lt;A-i&gt; &lt;Esc&gt;


It works fine in GVim. But when I run the same command with Vim in the gnome terminal it just doesn&#39;t work.
&lt;br&gt;So I think the problem is with the terminal, right?
&lt;br&gt;How can I fix it?

Thanks

**EDIT:** I have Windows 7 installed on the same machine, and with Windows terminal it works just fine too.

Alt key shortcuts not working on gnome terminal with Vim

I was trying to make the syntax highlighting (with 256 colors) of ```vim``` work inside ```screen```, which is running inside ```gterm```.

It works quite fine in the beginning. What I mean by &quot;in the beginning&quot; is, after I start ```screen```, and enter ```vim```, the colors look fine, and there are really 256 colors.

But after a while (I don&#39;t know exactly how long) the colors automatically change back to an appearance as if there are only 8 (or 16?) colors.

For example, after this has already occurred, if I enter the command

    hi Comment ctermfg=68

inside ```vim```, the comments appear to be &quot;pure&quot; green; however, if I open another ```vim``` outside screen (in the same terminal), then with the same command the comments appear to be a &quot;yellowish&quot; green.

The following is my .screenrc settings related to color:

    attrcolor b &quot;.I&quot;
    defbce &quot;on&quot;
    termcapinfo xterm &#39;Co#256:AB=\E[48;5;%dm:AF=\E[38;5;%dm&#39;
    term xterm-256color

After running a python script to display all the colors, I find out that maybe this is a problem of screen itself, and has nothing to do with vim.

What I did is, inside the ```screen``` session with problems, this script gives 256 colors, but many of them are actually the same; however, when I start a new screen session with the same configuration, this script gives 256 colors which are distinct from each other.

Edit:

Last night I connected to my Linux computer (which is in my office and it is always on) with ```putty```, then opened a ```screen``` session with multiple windows in it. The colors are correct last night. Then before I went to sleep I detached the ```screen``` session and closed ```putty```.

Now in the morning when I attach that ```screen``` session in ```putty``` again, the colors crash: they appear as if there are only 8 colors.

The colors are fine outside ```screen``` (but still in ```putty```).


Edit:

Three years later after I asked this question, today I saw a similar problem.  The problem is that ```vim``` can display 256 colors outside ```screen```, and ```screen``` can display 256 colors with a test script, but ```vim``` can&#39;t display any color (can only display black and white) inside ```screen```.  Just as a note to myself, here is the ```.screenrc``` file I am using

    hardstatus alwayslastline &quot;%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %Y-%m-%d %c&quot;
    shell &quot;bash&quot;
    startup_message off
    vbell off
    altscreen on
    attrcolor b &quot;.I&quot;
    defbce &quot;on&quot;
    termcapinfo xterm* &#39;is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;4;6l&#39;
    termcapinfo xterm &#39;Co#256:AB=\E[48;5;%dm:AF=\E[38;5;%dm&#39;
    term screen-256color

The solution to the problem is already mentioned in the accepted answer, namely, I need to include

    export TERM=xterm-256color

in ```.bashrc```.

Strange behavior of vim color inside screen with 256 colors

I have a plugin (FindFile.vim) that needs to run `:FindFileCache .` whenever I start vim to gather a file cache for quick opening.. I have to run this every time I start vim though. 

How might I write a command that runs once, every time that vim starts up?

Content Type	Original Author	Original Content on Stackoverflow
Question	northtree	View Question on Stackoverflow
Solution 1 - Vim	TWK	View Answer on Stackoverflow
Solution 2 - Vim	Aaron Oommen	View Answer on Stackoverflow
Solution 3 - Vim	jglouie	View Answer on Stackoverflow
Solution 4 - Vim	James Nine	View Answer on Stackoverflow
Solution 5 - Vim	Mirosław Leszczyński	View Answer on Stackoverflow
Solution 6 - Vim	pooroldpedro	View Answer on Stackoverflow

How can I merge multiple lines into one line in Vim?

Vim Problem Overview

Vim Solutions

Solution 1 - Vim

Solution 2 - Vim

Solution 3 - Vim

Solution 4 - Vim

Solution 5 - Vim

Solution 6 - Vim

Limit on file name length in bash

Can one class extend two classes?

Attributions