Suspend the process with CTRL+Z then use the command `bg` to resume it in background. For example:

    sleep 60
    ^Z  #Suspend character shown after hitting CTRL+Z
    [1]+  Stopped  sleep 60  #Message showing stopped process info
    bg  #Resume current job (last job stopped)

More about job control and `bg` usage in `bash` manual page:
&gt; JOB CONTROL  
&gt; Typing the *suspend* character (typically ^Z, Control-Z) while a process is running causes that process to be stopped and returns control to bash. [...] The user may then manipulate the state of this job, using the bg command to continue it in the background, [...]. A ^Z takes effect immediately, and has the additional side effect of causing pending output and typeahead to be discarded.
&gt;
&gt; bg [*jobspec* ...]  
&gt; Resume each suspended job *jobspec* in the background, as if it had been started with &amp;. If  *jobspec* is not present, the shell&#39;s notion of the *current job* is used.

**EDIT**

To start a process where you can even kill the terminal and it still carries on running

    nohup [command] [-args] &gt; [filename] 2&gt;&amp;1 &amp;

e.g.

    nohup /home/edheal/myprog -arg1 -arg2 &gt; /home/edheal/output.txt 2&gt;&amp;1 &amp;

To just ignore the output (not very wise) change the filename to `/dev/null`

To get the error message set to a different file change the `&amp;1` to a filename.

In addition: You can use the `jobs` command to see an indexed list of those backgrounded processes. And you can kill a backgrounded process by running `kill %1` or `kill %2` with the number being the index of the process.

I have a notification in my app with the following code:

    //Notification Start

	   notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
 	   
	   int icon = R.drawable.n1; 
	   CharSequence tickerText = &quot;Call Blocker&quot;;
	   long when = System.currentTimeMillis(); //now
	   Notification notification = new Notification(icon, tickerText, when);
	   Intent notificationIntent = new Intent(context, Main.class);
	   PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
	   
	   Context context = getApplicationContext();
	   CharSequence title = &quot;Call Blocker&quot;;
	   text = &quot;Calls will be blocked while driving&quot;;
	   
	   notification.setLatestEventInfo(context, title, text, contentIntent);

	   notification.flags |= Notification.FLAG_ONGOING_EVENT;
	   notification.flags |= Notification.FLAG_SHOW_LIGHTS;
	   notificationManager.notify(1, notification);
	   
	}

My notifications fires very well, but my problem is that, when I click on notification in Notification Center, it does not start my app. 

Basically, after clicking on my notification nothing happens!
What should I do, in order to start my Main activity after clicking on my notification.
Thanks.

Open application after clicking on Notification

I want an HTML form to submit to itself. How do I use the `action` attribute?

 1. `&lt;form action=&quot;&quot;&gt;`
 2. `&lt;form action=&quot;#&quot;&gt;`
 3. `&lt;form action=&quot;some/address&quot;&gt;`
 4. `&lt;form&gt;`

Which was is preferable?




Submit HTML form on self page

I have a command that uploads files using git to a remote server from the Linux shell and it will take many hours to finish.

How can I put that running program in background?  So that I can still work on shell and that process also gets completed?

How can I put the current running linux process in background?

<p>I have a command that uploads files using git to a remote server from the Linux shell and it will take many hours to finish.</p>
<p>How can I put that running program in background?  So that I can still work on shell and that process also gets completed?</p>


Is it possible to compile a C++ (or the like) program without generating the executable file but writing it and executing it directly from memory?

For example with `GCC` and `clang`, something that has a similar effect to:

    c++ hello.cpp -o hello.x &amp;&amp; ./hello.x $@ &amp;&amp; rm -f hello.x

In the command line.

But without the burden of writing an executable to disk to immediately load/rerun it. 

(If possible, the procedure may not use disk space or at least not space in the current directory which might be read-only).

How to compile and execute from memory directly?

I am Debian user, and I want to install python-dev, but when I run the code in the shell as a root:

    # aptitude install python-dev
I get the following error:

    Traceback (most recent call last):       
      File &quot;/usr/bin/apt-listchanges&quot;, line 28, in &lt;module&gt;
        import apt_pkg
    ImportError: No module named apt_pkg

What seems to be the problem and how can I resolve it?

python-dev installation error: ImportError: No module named apt_pkg

I want linux script to kill java program running on console.

Following is the process running as jar.

    [rapp@s1-dlap0 ~]$ ps -ef |grep java
    rapp    9473    1  0 15:03 pts/1    00:00:15 java -jar wskInterface-0.0.1-SNAPSHOT-jar-with-dependencies.jar
    rapp   10177  8995  0 16:00 pts/1    00:00:00 grep java
    [rapp@s1-dlap0 ~]$



linux script to kill java process

How can I count all lines of all files in all subdirectories with `wc`?

    cd mydir
    wc -l *
    ..
    11723 total

`man wc` suggests `wc -l --files0-from=-`, but I do not know how to generate the list of all files as `NUL-terminated  names`

    find . -print | wc -l --files0-from=-

did not work.

Use wc on all subdirectories to count the sum of lines

I&#39;m in a corporate environment (running Debian Linux) and didn&#39;t install it myself. I access the databases using Navicat or phpPgAdmin (if that helps). I also don&#39;t have shell access to the server running the database.

Which version of PostgreSQL am I running?

given input
&lt;pre&gt;
 echo 1,2,3,4,5,6,7,8,9,...100 
&lt;/pre&gt;
If I want to cut columns 5  I can do
&lt;pre&gt;
cut -d, -f-4,6-
&lt;/pre&gt;
what if I want to cut multiple non consecutive columns like 5, 7,etc
is there a one liner?


Using cut command to remove multiple columns

How can I convert a **Windows** dir path (say `c:/libs/Qt-static`) to the correct **POSIX** dir path (`/c/libs/Qt-static`) by means of standard **msys** features? And vice versa?

Windows PATH to posix path conversion in bash

I have a script that uses `sh` shell. I get an error in the line that uses the `source` command. It seems `source` is not included in my `sh` shell. 

If I explicitly try to run `source` from shell I get:

    sh: 1: source: not found

Should I somehow install &quot;source&quot;? Do I have a wrong version of `sh`?



source command not found in sh shell

I&#39;m calling a command line program in python using the `os.system(command)` call.

How can I call this command passing a different folder for execution? There is a system call for this? Or I should save the current folder, and, after execution, change restore it.

Command line execution in different folder

What is the difference between `sh` and `source`?

&lt;!-- language: lang-none --&gt;

    source: source filename [arguments]
        Read and execute commands from FILENAME and return.  The pathnames
        in $PATH are used to find the directory containing FILENAME.  If any
        ARGUMENTS are supplied, they become the positional parameters when
        FILENAME is executed.

And for `man sh`:

&lt;!-- language: lang-none --&gt;

    NAME
           bash - GNU Bourne-Again SHell
    
    SYNOPSIS
           bash [options] [file]
    
    COPYRIGHT
           Bash is Copyright (C) 1989-2004 by the Free Software Foundation, Inc.
    
    DESCRIPTION
           Bash  is  an sh-compatible command language interpreter that executes commands read from the standard input or from a file.  Bash also incorporates
           useful features from the Korn and C shells (ksh and csh).
    
           Bash is intended to be a conformant implementation of the IEEE POSIX Shell and Tools specification (IEEE Working Group 1003.2).


What is the difference between using `sh` and `source`?

I happen to run some commands blindly, in order to get things done.

I started to work with [Jenkins][1] recently, and then I had to use this `export` command to run the [Jenkins WAR archive][2]. What does the `export` command do in general, and why do we need to run this command, while running Jenkins (after the Jenkins home is set)?

  [1]: https://en.wikipedia.org/wiki/Jenkins_%28software%29
  [2]: https://updates.jenkins-ci.org/download/war/



What does the &#39;export&#39; command do?

I want to run a command from a *bash script* which has single quotes and some other commands inside the single quotes and a variable.

e.g. `repo forall -c &#39;....$variable&#39;`


In this format, `$` is escaped and the variable is not expanded.

I tried the following variations but they were rejected:

    repo forall -c &#39;....&quot;$variable&quot; &#39;

    repo forall -c &quot; &#39;....$variable&#39; &quot;

    &quot; repo forall -c &#39;....$variable&#39; &quot;

    repo forall -c &quot;&#39;&quot; ....$variable &quot;&#39;&quot;

If I substitute the value in place of the variable the command is executed just fine.

Please tell me where am I going wrong.

Expansion of variables inside single quotes in a command in Bash

I want to create gradient background where the gradient is in the top half and there&#39;s a solid color in the bottom half, like in this image below:

![][1]

I can&#39;t because the `centerColor` spreads out to cover the bottom and top. 

![In the gradient for the button, a white horizontal line fades over blue toward the top and botton.][2]

How can I make a background like the first image? How can I make small `centerColor` that&#39;s not spread out?

  [1]: http://i.stack.imgur.com/Woq2z.jpg
  [2]: http://i.stack.imgur.com/bbo6D.jpg

This is code in XML of background button above.

    &lt;shape xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:shape=&quot;rectangle&quot; &gt;
        &lt;gradient 
            android:startColor=&quot;#6586F0&quot;
            android:centerColor=&quot;#D6D6D6&quot;
            android:endColor=&quot;#4B6CD6&quot;
            android:angle=&quot;90&quot;/&gt;
        &lt;corners 
            android:radius=&quot;0dp&quot;/&gt;
        
    
    &lt;/shape&gt;

How to make gradient background in android

I know that question has been repeatedly asked in different ways, but I tried to go through all the answers (hopefully I didn&#39;t miss anyone) and none of them worked for me. 

Here is my extension&#39;s code:

**manifest:**

    {
	&quot;name&quot;: &quot;test&quot;,
	&quot;version&quot;: &quot;1.1&quot;,
	&quot;background&quot;: 
	{ 
		&quot;scripts&quot;: [&quot;contextMenus.js&quot;]
	},

	&quot;permissions&quot;: [&quot;tabs&quot;, &quot;&lt;all_urls&gt;&quot;, &quot;contextMenus&quot;],

	&quot;content_scripts&quot; : [
		{
			&quot;matches&quot; : [ &quot;http://*/*&quot; ],
			&quot;js&quot;: [&quot;jquery-1.8.3.js&quot;, &quot;jquery-ui.js&quot;],
			&quot;css&quot;: [ &quot;jquery-ui.css&quot; ],
			&quot;js&quot;: [&quot;openDialog.js&quot;]
		}
	],
	
	&quot;manifest_version&quot;: 2
    }

**contextMenus.js**

    function onClickHandler(info, tab) {
	    if (info.menuItemId == &quot;line1&quot;){
	
	  	  alert(&quot;You have selected: &quot; + info.selectionText);

		  chrome.extension.sendMessage({action:&#39;open_dialog_box&#39;}, function(){});

		  alert(&quot;Req sent?&quot;);
		
       	}
    }

    chrome.contextMenus.onClicked.addListener(onClickHandler);

    chrome.runtime.onInstalled.addListener(function() {

	  chrome.contextMenus.create({&quot;id&quot;: &quot;line1&quot;, &quot;type&quot;: &quot;normal&quot;, &quot;title&quot;: &quot;I&#39;m line 1&quot;,     &quot;contexts&quot;:[&quot;selection&quot;]});
	
    });


**openDialog.js**

    chrome.extension.onMessage.addListener(function(msg, sender, sendResponse) {
	
	  if (msg.action == &#39;open_dialog_box&#39;) {
		alert(&quot;Message recieved!&quot;);
      }
    });


The two alerts of the background page work, while the one of the content_script doesn&#39;t. 

console log&#39;s message: Port error: Could not establish connection. Receiving end does not exist.

Where is my fault?



sendMessage from extension background or popup to content script doesn&#39;t work

I see many applications that use a full-screen image as background.
This is an example:

![Full screen background image][1]

  [1]: http://i.stack.imgur.com/j1qzY.jpg

I want to use this in a project, the best way I&#39;ve found so far to do this is to use an image with a large size, put it in a `ImageView` and use `android: adjustViewBounds=&quot;true&quot;` to adjust the margins

The problem is that if a screen with a very high resolution, the image falls short.

Another option I thought of is to use the image in a `FrameLayout`, with `match_parent` in `width` and `height` as background... this stretches the image, but I think the result is not very good.

How would you do it?

Full screen background image in an activity

I&#39;ve searched a lot on the web but I cannot find a cross browser solution to fade a css backgrund image to greyscale and back.

The only working solution is to apply CSS3 filter greyscale:

    -webkit-filter: grayscale(100%);

but this works just with Chrome v.15+ and Safari v.6+
(as you can see here: http://css3.bradshawenterprises.com/filters/)

Many pages online speaks about this solution to grey out elements:

    filter: url(&quot;data:image/svg+xml;utf8,&lt;svg xmlns=\&#39;http://www.w3.org/2000/svg\&#39;&gt;&lt;filter id=\&#39;grayscale\&#39;&gt;&lt;feColorMatrix type=\&#39;matrix\&#39; values=\&#39;0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\&#39;/&gt;&lt;/filter&gt;&lt;/svg&gt;#grayscale&quot;); /* Firefox 10+, Firefox on Android */
    filter: gray; /* IE6-9 */

(as you can see here:http://www.karlhorky.com/2012/06/cross-browser-image-grayscale-with-css.html)

But actually it does not seem to work for css background images, as the webkit filter do.

Are there any solution (maybe with jquery?) to hack this lack of support for filter on less advanced browsers?



Greyscale Background Css Images

I have a `div` with a `background-image`. I want to overlay the background-image with an rgba color (`rgba(0,0,0,0.1)`) when the user hovers the div.

I was wondering if there&#39;s a one-div solution (i.e. not with multiple divs, one for the image and one for the color, etc.). 

I tried multiple things:

&lt;!-- language: lang-html --&gt;

    &lt;div class=&quot;the-div&quot; id=&quot;test-1&quot;&gt;&lt;/div&gt;
    &lt;div class=&quot;the-div&quot; id=&quot;test-2&quot;&gt;&lt;/div&gt;
    &lt;div class=&quot;the-div&quot; id=&quot;test-3&quot;&gt;&lt;/div&gt;

And this CSS:

&lt;!-- language: lang-css --&gt;

    .the-div {
        background-image: url(&#39;the-image&#39;);
        margin: 10px;
        width: 200px;
        height: 80px;
    }

    #test-1:hover {
        background-color: rgba(0,0,0,0.1);
    }

    #test-2:hover {
        background: url(&#39;the-image&#39;), rgba(0,0,0,0.1);
    }

    #test-3:hover {
        background: rgba(0,0,0,0.1);
    }

See [this fiddle][1].

The only option I saw is to make another image, with overlay, preload it using JavaScript and then use `.the-div:hover { background: url(&#39;the-new-image&#39;); }`. However, I&#39;d like a CSS-only solution (neater; less HTTP requests; less harddisk). Is there any?

[1]:http://jsfiddle.net/325Ft/1/

Content Type	Original Author	Original Content on Stackoverflow
Question	Mirage	View Question on Stackoverflow
Solution 1 - Linux	Ed Heal	View Answer on Stackoverflow

How can I put the current running linux process in background?

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Solution 1 - Linux

Submit HTML form on self page

Open application after clicking on Notification

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