Get Sub-String from Variable

Q

How to get a sub-string from a string batch variable?

✍: FYIcenter.com

A

You can get a sub-string from a string batch variable using the following variable modifier:

%variable~i,l%

In the above expression, "i" is the offset position of the sub-string to be extracted, and "l" is the length of the sub-string to be extracted.

If "i" is negative, the offset is counted from the end of the string. If "l" is negative, the length is the calculated from total number of characters in the string.

Examples of sub-string modifiers:

rem Get 5 characters starting from 11th
set test=%java_home:~10,5%

rem Get last 10 characters
set test=%java_home:~-10%

rem Get all characters except the last 2 characters 
set test=%java_home:~0,-2%

⇒ Batch Command Help Reference Documents

⇐ String Variable Match and Replace

⇑ Working with Parameters and Variables

⇑⇑ Windows Batch File Tutorials

2021-10-10, 1151👍, 0💬

"for" Loop Parameter Modifiers
How to use "for" Loop Parameter Modifiers? Here is a batch file, For-Loop-Parameter.bat, that dumps the "for" loop parameter "%%p" with different modifiers: @echo off rem For-Loop-Parameter.bat - Show components of a for loop parameter for %%p in (%1) do ( echo ---------------- echo p = %%p echo ~p ... 2022-02-04, 1658👍, 0💬

"del" Command Help Reference
How to get "del" command help reference? You can run the "del /?" command to get "del" command help reference as shown below: C:\fyicenter>del /? Deletes one or more files. DEL [/P] [/F] [/S] [/Q] [/A[[:]attributes]] names ERASE [/P] [/F] [/S] [/Q] [/A[[:]attributes]] names names Specifies a ... 2022-02-04, 1406👍, 0💬

"call" Command Help Reference
How to get "call" command help reference? You can run the "call /?" command to get "call" command help reference as shown below: C:\fyicenter>call /? Calls one batch program from another. CALL [drive:][path]filename [batch-parameters] batch-parameters Specifies any command-line information re... 2021-10-10, 1364👍, 0💬

What Is "for" Loop Parameter
What Is "for" Loop Parameter? A "for" loop parameter is a parameter defined in a "for" command to represent each item from a give list. A "for" loop parameter must be defined using the "%%name" format, where "name" can be any identifier string. Same parameter modifiers as batch parameters are also s... 2022-02-04, 1344👍, 0💬

"dir" Command Help Reference
How to get "dir" command help reference? You can run the "dir /?" command to get "dir" command help reference as shown below: C:\fyicenter>dir /? Displays a list of files and subdirectories in a directory. DIR [drive:][path][filename] [/A[[:]attributes]] [/B] [/C] [/D] [/L] [/N] [/O[[:]sortor... 2022-02-04, 1310👍, 0💬

Batch Command Help Reference Documents
Where to find introduction information on Batch Command Help Reference Documents? Here is a collection of tutorials compiled by FYIcenter.com team to provide introduction information on Batch Command Help Reference Documents. "call" Command Help Reference "copy" Command Help Reference "del" Command ... 2021-10-10, 1303👍, 0💬

"copy" Command Help Reference
How to get "copy" command help reference? You can run the "copy /?" command to get "copy" command help reference as shown below: C:\fyicenter>copy /? Copies one or more files to another location. COPY [/D] [/V] [/N] [/Y | /-Y] [/Z] [/L] [/A | /B ] source [/A | /B] [+ source [/A | /B] [+ ...]]... 2022-02-04, 1253👍, 0💬

What Are Batch Variables
What What Are Batch Variables? Batch variables are variables that create, store value to and retrieve value from in a batch file. There are 3 ways a batch variable is defined: 1. Defined in the batch file using the "set" command. For example, "set java_home=\fyicenter\java" will define a new variabl... 2022-02-04, 1236👍, 0💬

String Variable Match and Replace
How to perform sub-string match and replacement in a string batch variable? You can perform a sub-string match and replacement in a string batch variable using the following variable modifier: %variable:pattern=str% Wildcard character "*" can be used in "pattern" to match any number of any character... 2021-10-10, 1233👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.