RE: [Jython-users] Problem in Java Runtime

[Updike, C. <Cla...@jh...>]

Your mistake (a common one) is thinking that Runtime.exec()
Is acting as as a shell interpreter, which it is not.

This article cover the problem:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps_p.html

See the "Runtime.exec() is not a command line" heading...

-Clark

> -----Original Message-----
> From: jyt...@li...=20
> [mailto:jyt...@li...] On Behalf=20
> Of Dong, Ming
> Sent: Friday, May 05, 2006 10:49 AM
> To: jyt...@li...
> Cc: Jeff Emanuel
> Subject: [Jython-users] Problem in Java Runtime
>=20
> I used java Runtime to execute the unix command, the code is=20
> like def runCommand (cmd):
>         runtime =3D Runtime.getRuntime()
>         process =3D runtime.exec(cmd)
>         breader =3D
> BufferedReader(InputStreamReader(process.getInputStream()))
>         eof =3D 0
>         while not eof:
>                 inline =3D breader.readLine()
>                 if not inline:
>                         break
>                 print inline
>=20
> The function works fine but failed when the command contains=20
> pipe such as "ls -l | wc", the command with pipe returns nothing.
>=20
> Any suggestion ?
>=20
> Thanks a lot!
>=20
> Ming Dong
> 781-302-5183
>=20
>=20
>=20
>=20
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>=20