Re: [Help-bash] Is there a way to swap stdout with stderr?

[Dmitry Alexandrov]

Bob Proulx <bob-5cAygf9QrE/address@hidden> writes:

> Eduardo A. Bustamante López wrote:
>> Peng Yu wrote:
>> > Hi, I want to swap stdout and stderr of a command. I.e., I want to
>> > print the output of stdout to stderr and the output of stderr to
>> > stdout. Is there is a way to do so?
>> 
>> I'd do something like:
>> 
>> |    command 3>&1 1>&2 2>&3
>> 
>> The fd #3 works as a temporary variable to help in the swap.
>
> And then 3>&- to close the temporary 3 to complete the cleanup. :-)
>
>   command 3>&1 1>&2 2>&3 3>&-
>

Or even its four chars shorter and pretty much obscure equivalent:

   command 3>&1 1>&2 2>&3-

:-)