you are putting the perl script as the name of the command
you can do something like: rawSystem "perl" ["-e","print \"testing ...\n\";"
]
this is equivalent to call in the shell: perl -e "print \"testing ...\";"
(sorry Hong I din't put reply to all in the fist mail)
On Thu, Sep 10, 2009 at 1:24 PM, Hong Yang
I was trying to hide Perl code inside Haskell program like the following:
module Main where
import System.Environment (getArgs) import System.Cmd
main = do args <- getArgs rawSystem pl args where pl = "#!/usr/bin/perl\n" ++ "print \"testing ...\n\";"
The program can run, but generates no output at all. Can someone tell me any other tricks which might be missing? (Do we need to use pipe here?)
Thanks,
Hong
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