Table of Contents

Cmd

Search subfolders bare view save to file

dir *.csproj /b /s /ogn >> c:\temp\test.txt

DelayedExpansion

setlocal EnableDelayedExpansion
set var1=true
if "%var1%"=="true" (
  set var2=myvalue
  echo !var2!
)

Connect via RDC console

mstsc/v:server-tdc /console

Get current folder

%cd%

Javascript

OP-style Inheritance

function inherit_A(Child, Parent)
{
    var F = function () { };
    F.prototype = Parent.prototype;

    Child.prototype = new F();
    Child.prototype.constructor = Child;
    Child.super = Parent.prototype;
}

jQuery

AJAX get array

Current version

Request URL http://page.local/System/Agent/GetSignature?id=2&companyProfileId=1&test%5B%5D=1&test%5B%5D=2&test%5B%5D=3

$.ajax({
    url: url,
    data: {
        id: thisId,
        companyProfileId: companyProfileId,
        test: [1,2,3]
    },
    success: function (data) {
        if (data.Success) {
            fillData(data);
        }
    }
});

Traditional (either per request or jQuery.ajaxSettings.traditional = true)

Request URL http://page.local/System/Agent/GetSignature?id=2&companyProfileId=2&test=1&test=2&test=3

Controller

public ActionResult GetSignature(int id, int companyProfileId, IEnumerable test)

$.ajax({
    url: url,
    traditional: true,
    data: {
        id: thisId,
        companyProfileId: companyProfileId,
        test: [1,2,3]
    },
    success: function (data) {
        if (data.Success) {
            fillData(data);
        }
    }
});

AJAX post array

There two important things to note

    dataType: "json",
    contentType: 'application/json',
    data: JSON.stringify(caseIdList),

$.ajax({
    url: caseListDetailsUrl,
    type: "POST",
    dataType: "json",
    contentType: 'application/json',
    data: JSON.stringify(caseIdList),
    success: function (data) {
        if (data.Success) {
            newCompanyProfileId = data.CompanyProfileId;
        }
    }
});

Controller public ActionResult GetCaseListDetails(IEnumerable caseIdList)

react

Conditional output in render

    return (
      <div className="previewPanel">
        I am a PreviewPanel.<br/>
        I am showing {this.props.caseId ? "case " + this.props.caseId : "nothing"}
        {previewControl}
      </div>
    );

Pass data to react component

Store a reference to it, returned by renderComponent method and invoke setState, passing your data.

SQL

how to create sysadmin

I. Force SQL server to support mixed-mode authentication.

Run REGEDIT
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQLServer
NOTE: This key may vary slightly based on the installed version and instance name.
Set "LoginMode" to 2.
Restart SQL Server.
(Source: http://support.microsoft.com/kb/285097)

II. Force SQL server to let you in temporarily

Go to services.
Stop SQL Server.
Grab the SQL server command-line (right click the service - properties). Mine is:
"C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Binn\sqlservr.exe" -sSQLEXPRESS
Open an administrative command prompt.
Run the command-line from step 3, but add -m -c for single-user maintenance mode command-line.
Open another administrative command prompt.
Run "sqlcmd -S localhost\SQLEXPRESS" from that same directory (replace with your server and instance name)
Now you can do all the stuff everyone told you to do that didn't work. For example, to create a hero user with administrative access:

CREATE LOGIN hero WITH PASSWORD='123', DEFAULT_DATABASE=[master], DEFAULT_LANGUAGE=[us_english], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF
EXEC sys.sp_addsrvrolemember @loginname = 'hero', @rolename = 'sysadmin'
GO

QUIT and close the command-prompt
Go to the SQL Server command-line window and hit ctrl+C. It will prompt "Do you wish to shutdown SQL Server (Y/N)?" and enter Y.
Close the command-prompt
(Source: http://msdn.microsoft.com/en-us/library/dd207004.aspx)

III. Finally, login using your hero:

Restart the SQL Server service
Login using SQL Server authentication as the user "hero" with password "123"
BAM now you are in. Now give yourself sysadmin access and delete the temporary user.

allow executing assembly

Declare @sqlstsmt nvarchar(200)
set @sqlstsmt=N'ALTER AUTHORIZATION ON DATABASE::['+DB_NAME()+N'] TO [sa]'
exec(@sqlstsmt)
go

Declare @sql nvarchar(200)
SET @sql = 'ALTER DATABASE [' + db_name() + '] SET TRUSTWORTHY ON'
EXEC sp_executeSql @sql 
go

sp_configure 'clr enabled', 1
go

variables sample

DECLARE @orderId INT;
SET @orderId = (SELECT TOP 1 orderId FROM [Order] ORDER BY OrderId DESC);

DECLARE @nextInvoiceDate dateTime;
SET @nextInvoiceDate = '12-31-2013';

UPDATE
	Domain
SET
	HasRunSetup = 1,
	SetupComplete = 1,
	NextInvoiceDate = @nextInvoiceDate
WHERE DomainId in (
	SELECT domainId
	FROM OrderDomain
	WHERE OrderId = @orderId
	)

print multiline

-- Option 1
DECLARE @text NVARCHAR(MAX)

SELECT @text = [BodyText]
FROM [support].[dbo].[CommunicationEmail]
WHERE CommunicationId = 183

PRINT(@text)


-- Option 2, in case of very long texts

DECLARE @limit as int,
    	@charLen as int,
    	@current as int,
    	@chars as varchar(8000)

SET @limit = 8000

SELECT  TOP 1 @charLen = DATALENGTH ([FopWithGiro])
FROM    [outerface].[dbo].[Invoice]
where [InvoiceDraftId] = 122869

SET @current = 1

WHILE @current < @charLen
BEGIN
    SELECT	TOP 1 @chars = SUBSTRING([FopWithGiro],@current,@limit)
    FROM	[outerface].[dbo].[Invoice]
    where [InvoiceDraftId] = 122869
    PRINT @chars

    SET @current = @current + @limit
END

populate table based on static data and another table

INSERT INTO [webhusetlogin].[dbo].[EmployeeGroupLine]
	SELECT EmployeeId, EmployeeGroupId
	FROM [webhusetlogin].[dbo].[Employee]
	CROSS JOIN (
		SELECT 1400 AS EmployeeGroupId
		UNION SELECT 1401
	) Acl

Using TOP with variable

USE AdventureWorks;
GO
DECLARE @p AS int;
SELECT @p=10
SELECT TOP(@p) *
FROM HumanResources.Employee;
GO

Regex

Any char including multiline

Should use

\s\S

instead of

(.|[\r\n])

Any char including multiline

Non-greedy quantifier(?)

<test>.*?</test>

will match first tag instead of the whole paragraph in

<test>12345</test><test>2</test><test>3</test>

Unix

delete a folder with subfolders

rm -rf folder_name

delete symlink

rm linkname

or

unlink linkname

list folder info

ls -la /var/lib/tomcat7/webapps/

Kill ethernet connection

ifconfig eth1 down

Git

Clone specific branch

git clone -b my-branch git@github.com:user/myproject.git

If you don't care about any local changes and just want a copy from the repo

git reset --hard HEAD
git pull

Remove local changes

git stash save --keep-index
git stash drop

Create a new branch

git checkout -b feature-branch-name source_branch_name

Push newly created branch to origin

git push -u origin feature-branch-name

Push changes to a remote repo

git push origin CORE-734_second_attempt

Staging

git status
git add <some-file>
git commit

Stage all pending changes

git add .

Retrieve and switch to a remote branch. Get latest changes.

git fetch && git checkout CORE-723-incorrect-handling-of-enable_websso
git pull

Make git ignore "x" file permissions bit

git config core.filemode false

See modifications

git diff file_path

Revert to previous commit. Works with local commits.

git reset --hard

Merge

git checkout master
git merge feature_branch_name
// fix all the merge conflicts
git add .
// use default message for commit - it's good enough
git commit
git push origin master

Revert file changes.

git checkout filename

Get latest changes and preserve current work.

git stash
git pull
git stash pop

Unstage a file.

git reset fil_name

If you screwed to push changes, create a separate branch, create a pull request from it. For existing branch do.

git reset --hard commit_id

Remove local copies of no longer existing remote branches

git remote prune origin

Remove local(not remote) branch

git branch -d the_local_branch

Tag a commit

git tag -a <tag-name> -m <message> <commit-hash>

License

Li0liQ/knowledgebase

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