Try redirect_stderr: http://docs.julialang.org/en/latest/stdlib/io-network/#Base.redirect_stderr
On Fri, Jul 3, 2015 at 10:25 PM, Ben Ward <[email protected]> wrote: > Hi, > > I want to run an external command in Julia. Should a command fail I want > to get the message from the external command. > > I know failed commands raise a general exception that can be caught: > > *run(`dat hi`)* > > dat: hi is not a valid command > > *ERROR: failed process: Process(`dat hi`, ProcessExited(1)) [1]* > > * in run at ./process.jl:490* > > I see that a message is printed out by the external program: > > dat: hi is not a valid command. > > However readall() does not get this message and return it as a string: > > *readall(`dat hi`)* > > dat: hi is not a valid command > > *ERROR: failed process: Process(`dat hi`, ProcessExited(1)) [1]* > > * in readbytes at process.jl:474* > > * in readall at process.jl:479* > > Is there a way I can capture this message at all and report it back to the > user as part of a try-catch upon catching of the ProcessExited(1) exception? > > Thanks, > Ben. >
