`M` refers to the meta key, which is not present on most keyboards. (Its use in software is for primarily historical reasons.) Usually, the meta key is emulated by another key on your keyboard. On Windows and Linux, it is usually the &lt;kbd&gt;Alt&lt;/kbd&gt; key. On Mac OS X, that key (aka &lt;kbd&gt;Option&lt;/kbd&gt;) already has other uses, and so &lt;kbd&gt;Escape&lt;/kbd&gt; is used instead.

I do not know for `nano`, but for `emacs`, `M-` stands for the **Meta key**, which can mean pressing the &lt;kbd&gt;Alt&lt;/kbd&gt; key simultaneously with the letter key or by pressing &lt;kbd&gt;Esc&lt;/kbd&gt; key before the letter key. &lt;kbd&gt;Alt&lt;/kbd&gt; generally only works when using an X version of the application, so when using a dumb terminal, only &lt;kbd&gt;Esc&lt;/kbd&gt; will work.

&lt;kbd&gt;Esc&lt;/kbd&gt;

For instance, if you wanted to go to the end of the file press 

&lt;kbd&gt;Esc&lt;/kbd&gt; then &lt;kbd&gt;/&lt;/kbd&gt;

You don&#39;t need to hold down &lt;kbd&gt;Esc&lt;/kbd&gt; as if it were &lt;kbd&gt;Shift&lt;/kbd&gt;.

I am facing the famous &#39;Incorrect syntax&#39; while using a `THROW` statement in a T-SQL stored procedure. I have Googled it and checked the questions on StackOverflow but the solutions proposed (and strangely, accepted) do not work for me.

I am modifying a stored procedure as follows:

&lt;!-- language: lang-sql --&gt;

    ALTER PROCEDURE [dbo].[CONVERT_Q_TO_O]
	    @Q_ID int = NULL,
    	@IDENTITY INT = NULL OUTPUT
    AS
    BEGIN
     	SET NOCOUNT ON;

        DECLARE @EXISTING_RECORD_COUNT [int];

        SELECT
            @EXISTING_RECORD_COUNT = COUNT (*)
	    FROM
		    [dbo].[O]
	    WHERE
		    [Q_ID] = @Q_ID

        IF @EXISTING_RECORD_COUNT = 0
        BEGIN
            -- DO SOME STUFF HERE

            -- RETURN NEW ID
            SELECT @IDENTITY = SCOPE_IDENTITY()
        END
    	ELSE
		BEGIN
			 THROW 99001, &#39;O associated with the given Q Id already exists&#39;, 1;
		END
    END
    GO

When I code this T-SQL I get an error saying 

&gt; Incorrect statement near &#39;THROW&#39;. Expecting CONVERSATION, DIALOG, DISTRIBUTED, or TRANSACTION

All solutions suggest to put a semi-colon either before &#39;THROW&#39; or after &#39;ELSE BEGIN&#39; statements. When I modify the T-SQL I simply get the &quot;***Incorrect statement near &#39;THROW&#39;***&quot; error and can&#39;t seem to find a solution.

Any suggestions?

T-SQL Throw Exception

Is there a simple way to remove an element from a `Vec&lt;T&gt;`?

There&#39;s a method called [`remove()`][1], and it takes an `index: usize`, but there isn&#39;t even an `index_of()` method that I can see.

I&#39;m looking for something (hopefully) simple and O(n).

  [1]: https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.remove

Remove an element from a vector

I&#39;m trying to do a case-sensitive search in Nano.  The help menu at the bottom of the screen says I can toggle case-sensitivity by typing `M-C`.


    ^G Get Help         ^Y First Line       ^T Go To Line       ^W Beg of Par       M-J FullJstify      M-B Backwards
    ^C Cancel           ^V Last Line        ^R Replace          ^O End of Par       M-C Case Sens       M-R Regexp

I&#39;m not sure how to do this.  Does `M-` refer to a modifier key that should be held while I type `C`?  Or does `M-` mean I should press some key or key combination before hitting `C`?  

Unix: what modifier key does &quot;M-&quot; refer to (e.g. M-C)

I'm trying to do a case-sensitive search in Nano. The help menu at the bottom of the screen says I can toggle case-sensitivity by typing <code>M-C</code>.
<pre><code class="hljs language-sql">^G Get Help ^Y First Line ^T Go To Line ^W Beg of Par M-J FullJstify M-B Backwards
^C Cancel ^V Last Line ^R Replace ^O End of Par M-C Case Sens M-R Regexp
</code></pre>
I'm not sure how to do this. Does <code>M-</code> refer to a modifier key that should be held while I type <code>C</code>? Or does <code>M-</code> mean I should press some key or key combination before hitting <code>C</code>?

My Code:

    import nltk.data
    tokenizer = nltk.data.load(&#39;nltk:tokenizers/punkt/english.pickle&#39;)

ERROR Message:

	[ec2-user@ip-172-31-31-31 sentiment]$ python mapper_local_v1.0.py
	Traceback (most recent call last):
	File &quot;mapper_local_v1.0.py&quot;, line 16, in &lt;module&gt;

	    tokenizer = nltk.data.load(&#39;nltk:tokenizers/punkt/english.pickle&#39;)

	File &quot;/usr/lib/python2.6/site-packages/nltk/data.py&quot;, line 774, in load

	    opened_resource = _open(resource_url)

	File &quot;/usr/lib/python2.6/site-packages/nltk/data.py&quot;, line 888, in _open

	    return find(path_, path + [&#39;&#39;]).open()

	File &quot;/usr/lib/python2.6/site-packages/nltk/data.py&quot;, line 618, in find

	    raise LookupError(resource_not_found)

	LookupError:

	Resource u&#39;tokenizers/punkt/english.pickle&#39; not found.  Please
	use the NLTK Downloader to obtain the resource:

	    &gt;&gt;&gt;nltk.download()

	Searched in:
	- &#39;/home/ec2-user/nltk_data&#39;
	- &#39;/usr/share/nltk_data&#39;
	- &#39;/usr/local/share/nltk_data&#39;
	- &#39;/usr/lib/nltk_data&#39;
	- &#39;/usr/local/lib/nltk_data&#39;
	- u&#39;&#39;

I&#39;m trying to run this program in Unix machine:

As per the error message, I logged into python shell from my unix machine then I used the below commands:

    import nltk
    nltk.download()

and then I downloaded all the available things using d- down loader and l- list options but still the problem persists.

I tried my best to find the solution in internet but I got the same solution what I did as I mentioned in my above steps.

Resource u&#39;tokenizers/punkt/english.pickle&#39; not found

Why does this program print “forked!” 4 times?

    #include &lt;stdio.h&gt;
    #include &lt;unistd.h&gt;

    int main(void) {

      fork() &amp;&amp; (fork() || fork());

      printf(&quot;forked!\n&quot;);
      return 0;
    }

Why does this program print &quot;forked!&quot; 4 times?

I need to find the OS name and version on Unix/Linux platform. For this I tried following:

1. `lsb_release` utility

2. `/etc/redhat-release` or specific file

But it does not seem to be best solution as LSB_RELEASE support is no longer for RHEL 7.

Is there any way that will work on any Unix or Linux platform?

Best way to find os name and version in Unix/Linux platform

Say I have some arbitrary multi-line text file:

    sometext
    moretext
    lastline

How can I remove only the last character (the e, not the newline or null) of the file without making the text file invalid?

How can I remove the last character of a file in unix?

Suppose I have a Unix shell variable as below

    variable=abc,def,ghij

I want to extract all the values (`abc`, `def` and `ghij`) using a for loop and pass each value into a procedure. 

The script should allow extracting arbitrary number of comma-separated values from `$variable`.

Loop through a comma-separated shell variable

Is it possible to copy text from a file, opened with `nano`, to the shell?

I have a text file, and I want to copy several lines to the console, but I cannot find a keyboard shortcut to copy the text.

Copy text from nano editor to shell

How to move a line of text up/down in [Nano linux command line editor](http://www.nano-editor.org/)? 

Is there any analogue way to do that as in [IntelliJ Idea](https://www.jetbrains.com/idea/help/adding-deleting-and-moving-lines.html#d1591098e152):

1. Place the caret at the line to be moved.
2. Do one of the following:

On the main menu, choose `Code | Move Line Up or Code | Move Line Down`.

Press &lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;Up&lt;/kbd&gt; or &lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;Down&lt;/kbd&gt;.

Move whole line up/down shortcut in nano (analogue to intelliJ or Visual Studio)

Does the Nano minimal text editor have a keyboard shortcut feature to jump to a specified line?

Vim provides several [analogs][1].


  [1]: http://vim.wikia.com/wiki/Go_to_line

jump to line X in nano editor

I have deleted the [AWS credentials](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html) in `sudo nano ~/.aws/config`. But, the credentials are still in [`aws configure`](https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html). Is there a way to reset `aws configure` with clear state?

How Do I Clear The Credentials In AWS Configure?

I&#39;m new to git and I&#39;m trying to commit my first changes on a Windows machine. However, when I type in `$git commit` it takes me to a different screen than any online tutorials show or than what is mentioned in [Pro Git][1]. No online searching yields an explanation of how to use this screen, either.

The screen looks like this: [![The git commit screen I&#39;m having trouble with][2]][2]

I have tried every key on the keyboard, but nothing seems to actually **do** the commit. Also there are all these little help options in green at the bottom of the screen that seem to be giving commands, but when I press the buttons they show it just types them into the commit message. What are those help options and how do I use them?

Everyone else seems to be using something called &quot;vim&quot; which I believe I chose not to install when installing Git because I thought the Windows console was fine.

*So how do I actually commit and what are those green commands at the bottom of the screen?* Thanks!


  [1]: https://git-scm.com/book/en/v2
  [2]: https://i.stack.imgur.com/qobmR.png

Content Type	Original Author	Original Content on Stackoverflow
Question	dB'	View Question on Stackoverflow
Solution 1 - Unix	chepner	View Answer on Stackoverflow
Solution 2 - Unix	Frederic Lachasse	View Answer on Stackoverflow
Solution 3 - Unix	Travis Heeter	View Answer on Stackoverflow

Unix: what modifier key does "M-" refer to (e.g. M-C)

Unix Problem Overview

Unix Solutions

Solution 1 - Unix

Solution 2 - Unix

Solution 3 - Unix

Remove an element from a vector

T-SQL Throw Exception

Attributions