Knowledge Walls
John Peter
Pune, Maharashtra, India
Commands
Date II Find Prompt Set Start Cls Tree
Commands [cont'd]
Powershell Type Taskkill
String manipulation
Substring Find String Find & Replace String Concat Split string by delimiter
Things to Know
Declaring variable Inline multiple statements @echo off File content to variable Present working directory Add comments and multiline comments in MS DOS Directory is Exist
Things to Know [cont'd]
Prompt value
Decision making
For Loop IF statement Goto If Else
File System
MKDir Echo. > filename.txt For each.. in RmDir
Arithmetic Operators
Arithmetic Operators + (Plus) Operator - (Minus) Operator * (Multiply) Operator / (Division) Operator %% (Mod) Operator
Relational Operators
Equals Relational operators Not equals Greater than Greater than or equals to Less than or equals to Less than
Logical Operators
AND Operator OR Operator NOT Operator
Examples
How to create template file by batch file MS DOS Commands How to add ms-dos parameters/arguments with spaces Percentage in echo ms dos escape characters How to append string in a file using MS DOS Commands How to escape characters in string using MS DOS Commands
Find String in String manipulation of MS-DOS Commands
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How to find string in ms dos command 
This topic is explained about how to find a string in string using ms dos commands. The below syntax to perform find and replace on a string.

Syntax:
%<variable-name>:<find-text>=<replace-text>%

This above statement will return replace string. If a string is replace by empty string then it is not equals to orginal string. This is the way used below to find string in a string.

SET aval=welcome to ms-dos
ECHO %aval:come=%

About aval is variable name. come is search string. empty string is replace string. So output is "wel to ms-dos".
Find string in ms-dos example
@echo off
SET text=Welcome to india

ECHO String is: %text%
ECHO Search string is "come"

IF NOT "%text:come=%"=="%text%" (
    ECHO String is found
) ELSE (
    ECHO String is not found
)

SET /p exit=Bye
Output 
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Things to Know of MS-DOS Commands
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