CODEWITHSUNDEEP
windowsbatch-file
Dasmowenator
Dasmowenator

Reputation: 5428

What do the & and | operators do in a batch file?

I'm debugging a batch file left behind by an old employee and I've come across the line: 

@nmake -f makefile /E 2>&1 | tee %LOGFILEPATH%

What does this do?
I know what @nmake -f makefile /E does and I know what tee %LOGFILEPATH% does, but I can't find anything on what the 2>&1 | means.
Thanks

Upvotes: 1

Views: 235

Answers (2)

Ben S
Ben S

Reputation: 69342

2>&1 redirects the standard error stream to standard output.

The pipe | redirects standard output of the first command to the standard input to the second command.

So your command, bunches all output from nmake and redirects it all to tee

Upvotes: 2

Richard Fearn
Richard Fearn

Reputation: 25481

2>&1 redirects standard error to standard out.

| pipes the output from nmake into tee.

Upvotes: 4

Related Questions