oxware:
> I use "system" in System.Cmd to execute a shell cmd, then how can I
> catch its stdout?
Use System.Process,
http://haskell.org/ghc/docs/latest/html/libraries/base/System-Process.html
And example, call the 'date' program:
> (inh,outh,errh,pid) <- runInteractiveProcess "date" ["+%d:%m:%y"] Nothing
> Nothing
> hClose inh
> hGetContents outh
"24:01:07\n"
Regards,
Don
There's some wrappers to this floating around too, which should get into
base soon enough.. E.g. http://www.cse.unsw.edu.au/~dons/code/newpopen/
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