Redirect stdout and stderr from inside a batch file

Question

Is there a way to redirect stdout and stderr for a batch file from inside it.

I\'m imagining something like

set STDOUT=stdout.log
echo Some text
a.ex         


        

Answer 1

Yes, you need to redirect and append stdout to your file (1>> %STDOUT%) and connect stderr to stdout (2>&1):

set STDOUT=stdout.log
echo Some text 1>> %STDOUT% 2>&1
a.exe 1>> %STDOUT% 2>&1
b.exe 1>> %STDOUT% 2>&1
c.exe 1>> %STDOUT% 2>&1

@EitanT correctly noted that your question doesn't necessarily imply writing both stderr and stdout into the same file. So for completeness, here's a version writing into separated files:

set STDOUT=stdout.log
set STDERR=stderr.log
echo Some text 1>> %STDOUT% 2>> %STDERR%
a.exe 1>> %STDOUT% 2>> %STDERR%
b.exe 1>> %STDOUT% 2>> %STDERR%
c.exe 1>> %STDOUT% 2>> %STDERR%