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
Set in Commands of MS-DOS Commands
6446 Views
Define SET command in MS DOS 
SET command is used in two ways. one way is read a string to the variable from console by /p mode, this will prompt string from the end-user and another way is eval the expression using /a mode.

SET /a expression
SET /a c=a+b

SET /p variable=Prompt value label
SET /p a=Enter the a value

Just assign string using SET command like below.
SET name=Knowledgewalls
Example of SET command
@echo off

SET a=20
SET b=30

SET /a c=a+b
ECHO C value is %c%
Output 
C value is 50
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String manipulation of MS-DOS Commands
Arithmetic Operators of MS-DOS Commands
Arithmetic Operators of MS-DOS Commands
String manipulation of MS-DOS Commands
Relational Operators of MS-DOS Commands
String manipulation of MS-DOS Commands
Examples of MS-DOS Commands
String manipulation of MS-DOS Commands
Things to Know of MS-DOS Commands
Things to Know of MS-DOS Commands
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