Custom Continuous Deployment Script (Kudu) for Node-Angular and Asp.net Application

Folders

• node-angular - Node js server which have font-end application in Angular which have bower to resolve client dependancies and gulp to automate build process
• asp.net - Asp.net application having multiple projects and want to deploy a main project

Quick Notes on Command Line

Reference :-

• https://ss64.com
• https://ss64.com/nt
• https://ss64.com/nt/syntax-args.html
• https://ss64.com/nt/if.html etc

ECHO

Display messages on screen, turn command-echoing on or off.

      ECHO [ON | OFF] 
      ECHO [message]
      
    Key
          ON      : Display each line of the batch on screen (default)
          OFF     : Only display the command output on screen
          message : a string of characters to display

IF

File syntax
   IF EXIST filename command 
   IF NOT EXIST filename (command) ELSE (command)

String syntax
   IF [/I] [NOT] item1==item2 command      <<==== Do a case Insensitive string comparison.
   IF [/I] item1 compare-op item2 command

Error Check Syntax
   IF [NOT] DEFINED variable command
   IF [NOT] ERRORLEVEL number command

Keys
   compare-op can be one of
               EQU : Equal
               NEQ : Not equal

               LSS : Less than <
               LEQ : Less than or Equal <=

               GTR : Greater than >
               GEQ : Greater than or equal >=
               
    This 3 digit syntax is necessary because the > and < symbols are recognised as redirection operators

Caution in IF:

IF "value1" EQU "value2"(command) is invalid syntax 
IF "value1" EQU "value2" (command) is correct syntax. Note the space after value2

PUSHD & POPD

Change the current directory/folder and store the previous folder/path for use by the POPD command.

Examples

C:\demo> pushd \work 
C:\work> popd
C:\demo> pushd "F:\monthly reports"
F:\monthly reports> popd
C:\demo>

setlocal & endlocal

setlocal Set options to control the visibility of environment variables in a batch file.

endlocal End localisation of environment changes in a batch file. Pass variables from one batch file to another.

CALL

Call one batch program from another, or call a subroutine.

Syntax
     CALL [path to executable] [parameters]
     CALL :label [parameters]
Keys
    parameters   Any command-line arguments.
    :label       Jump to a label in the current batch script.

CALL a subroutine (:label)

The CALL command will pass control to the statement after the label specified along with any specified parameters. To exit the subroutine specify GOTO:eof this will transfer control to the end of the current subroutine.

A label is defined by a single colon followed by a name. This is the basis of a batch file function.

For Example
          CALL :sub_display 123
          CALL :sub_display 456
          ECHO All Done
          GOTO :eof

          :sub_display
          ECHO The result is %1        <<==== Accessing parameter passed to sub-rutine sub_display
          EXIT /B

At the end of the subroutine an EXIT /B will return to the position where you used CALL (GOTO :eof can also be used for this)

Accessing Parameter in subrutine

You can get the value of any argument using a % followed by it's numerical position on the command line. The first item passed is always %1 the second item is always %2 and so on

%* in a batch script refers to all the arguments (e.g. %1 %2 %3 %4 %5 ...%255)

EXIT

Quit the current batch script, quit the current subroutine or quit the command processor (CMD.EXE) optionally setting an errorlevel code.

Syntax
      EXIT [/B] [exitCode]

Key
    /B        When used in a batch script, this option will exit 
              only the script (or subroutine) but not CMD.EXE

   exitCode   Sets the %ERRORLEVEL% to a numeric number.
              If quitting CMD.EXE, set the process exit code no.

EXIT /b has the option to set a specific errorlevel, 0 for sucess, 1 or greater for an error.