In cygwin, I use >/dev/null 2>&1 quite frequently and it works as expected.
In windows cmd.exe, I don't know why they would recommend the < part for dealing with output, but I have used >NUL 2>&1 for the same effect in Windows command shells. -- Erik On Fri, Jan 22, 2016 at 6:21 PM, Kenneth Wolcott <kennethwolc...@gmail.com> wrote: > Hi; > > I'm using a qx call to "net user username /DOMAIN" (probably should > use system instead) to determine whether a person having an active > account in an application is still an employee. > > I get two messages back (error and/or usage) when a username is not found. > > "The user name could not be found." > > and > > "More help is available by typing NET HELPMSG 2221." > > I'd like to hide (not display, not print) these two messages. > > Coming from a UNIX/Linux background, I'd do a "2>&1 > /dev/null" > operation to dispose of STDOUT and STDERR, but "1<&2 > NUL" (suggested > by > > "https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx?mfr=true"; > > does not seem to work. > > I tried file descriptor 3, but that resulted in an error regarding > unsupported file handle,. or something like that. > > I was considering using IPC::Run3, but I don't think that will help > with suppressing error message and usage message. > > Perhaps there is a Perl module that is native to Cygwin that will > perform this kind of lookup for me? Maybe a Perl module that is NOT > native to Cygwin? > > Thanks, > Ken Wolcott > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
