CODEWITHSUNDEEP
batch-file
Noodlebear
Noodlebear

Reputation: 27

Problems with an extra space when redirecting variables into a text file

When I run the following lines:

set "Loc=%~dp0"
echo %Loc% > C:\PLACE\LOCFILE.txt

I receive the following in the LOCFILE:

C:\BATCHLOC 
           ^
       Note Space

I am trying to use %Loc% like this in a separate batch file:

(
set /p Loc=
)<C:\PLACE\LOCFILE.txt
)
call "%Loc%\FILENAME.bat"

But the space ruins the path, and so then the call command doesn't work. Does anyone know how to fix this, (Stop it from creating the space at the end)?

Upvotes: 1

Views: 156

Answers (2)

foxidrive
foxidrive

Reputation: 41297

This is more robust.

>"C:\PLACE\LOCFILE.txt" echo(%Loc%

The redirection at the starts stops numbers like 3,4,5 in %loc% from breaking your code when redirection is directly at the end (such as shown below).

When using the technique below then constructs like test 2 in %loc% will also fail.

This is because single digit numbers at the end are interpreted as stream designators, so numerals 0 to 9 are all problems when placed directly before a redirection character (> or >>).

do not use this: echo %Loc%> C:\PLACE\LOCFILE.txt

Extra tips:

The echo( protects from other failures in the echo command and the ( character has been tested as the least problematic character when used in this way.

The double quotes around the "drive:\path\filename" also protect against long filename elements such as spaces, as well as the & character.

Upvotes: 3

Melebius
Melebius

Reputation: 6695

echo %Loc% > C:\PLACE\LOCFILE.txt
          ↑
     This space is written to the file.

Fix:

echo %Loc%> C:\PLACE\LOCFILE.txt

Upvotes: 3

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