On Thu, Jul 9, 2015 at 7:42 PM, Yaakov Selkowitz <yselkow...@cygwin.com> wrote: > On Thu, 2015-07-09 at 19:30 -0400, Michael DePaulo wrote: >> mark06 mentioned this on IRC today and then left the channel about 1 hour >> later: >> >> <mark06> has anyone ever discussed exit codes above one byte? they are >> valid on modern windows, but cygwin's bash will mess them >> >> I was curious, so I googled it (I could not find an answer) and then >> tried it out. I can confirm the what he said. > > http://pubs.opengroup.org/onlinepubs/9699919799/functions/exit.html > https://www.gnu.org/software/libc/manual/html_node/Exit-Status.html > > -- > Yaakov
Right, only the least significant 8 bits are outputted. So "257" becomes "1". I thought I read somewhere that the Cygwin mintty terminal + bash shell is supposed to be suitable for running native windows apps. Maybe I was thinking of the 1st paragraph on this page after the list of features: https://code.google.com/p/mintty/ Or maybe I was thinking about this reply: https://cygwin.com/ml/cygwin/2007-03/msg00758.html Either way, I feel like this should be documented somewhere. Perhaps I should submit a patch to add a section like "return codes" to to this page? https://cygwin.com/cygwin-ug-net/using-effectively.html https://cygwin.com/git/gitweb.cgi?p=newlib-cygwin.git;a=blob;f=winsup/doc/effectively.xml -Mike -- 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
