How to get a variable substring in a for loop

[Guest ShadowTek]

I know how to pull a substring out of a variable, but I don't know how

to get a substring out of a variable in a for loop.

 

When I try the folluwing command...

 

for %G in (Input_Files\*) do echo %G:~12%

 

....I get this:

 

Input_Files\New Text Document.txt:~12%

 

But what I am trying to get is this:

 

New Text Document.txt

 

What is wrong with this?

[Guest Pegasus \(MVP\)]

Re: How to get a variable substring in a for loop

 

 

"ShadowTek" <psistormyamato@cs.com> wrote in message

news:ad6ef252-dcdf-4d50-a410-da5d7f21bd47@i76g2000hsf.googlegroups.com...

>I know how to pull a substring out of a variable, but I don't know how

> to get a substring out of a variable in a for loop.

>

> When I try the folluwing command...

>

> for %G in (Input_Files\*) do echo %G:~12%

>

> ...I get this:

>

> Input_Files\New Text Document.txt:~12%

>

> But what I am trying to get is this:

>

> New Text Document.txt

>

> What is wrong with this?

 

Substring manipulation works with environmental variables.

%G is not an environmental variable, hence your problem.

There two ways to resolve this issue. Either like so:

@echo off

setlocal EnableDelayedExpansion

for %%G in (InputFiles\*.*) do (

set Name=%%G

echo !Name:~12!

)

 

or like so:

@echo off

for %%G in (InputFiles\*.*) do call :Sub %%G

goto :eof

:Sub

set Name=%*

echo %Name:~12%

Note that your choice of coding is fragile because

you do not specify an absolute path for the InputFiles

Folder. To make the batch file robust you must

replace this by "c:\InputFiles" (for example).

[Guest ShadowTek]

Re: How to get a variable substring in a for loop

 

Thanks