RE: [Jython-users] How to call external commands

[John E. C. <jc...@ve...>]

Brian,

I simply forgot about the exec method.  And as the article you referred to
points out - it is an easy API to misuse. =20

thanks for the excellent advice, example and article,=20

John

 At 05:06 PM 3/19/01 -0600, Brian Zimmer wrote:=20
>
> Here's an interesting article pertaining to Runtime/Process:
> =A0
>
> <http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html>http://w
> ww.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
> =A0
> brian
>>
>> -----Original Message-----=20
>> From: jyt...@li...
>> [mailto:jyt...@li...]On Behalf Of Brian=
 Zimmer=20
>> Sent: Monday, March 19, 2001 4:42 PM=20
>> To: John E. Conlon; jyt...@li...=20
>> Subject: RE: [Jython-users] How to call external commands
>>
>> Here's an extremely simple example (by no means production, but could get
>> you on your way):=20
>>
>> """ =20
>> =A0Process the command. =20
>> """=20
>>
>> from java.lang import Runtime =20
>> from java.io import BufferedInputStream=20
>>
>> p =3D Runtime.getRuntime().exec("ls") =20
>> #p.waitFor() =20
>> stream =3D BufferedInputStream(p.getInputStream())=20
>>
>> e =3D []=20
>>
>> r =3D stream.read() =20
>> while r !=3D -1: =20
>> =A0e.append(r) =20
>> =A0r =3D stream.read()=20
>>
>> print "".join(map(chr, e))=20
>>
>> Running it produces:=20
>>
>> D:\home\development\python>jython process.py =20
>> HTTPSession$py.class =20
>> HTTPSession.py =20
>> __init__.py =20
>> a5.py =20
>> aar.py =20
>> acl.py =20
>> aioobe.py =20
>> ant.py =20
>> atl.py =20
>> caps.py =20
>> cont.py=20
>>
>> brian=20
>>
>> -----Original Message----- =20
>> From: jyt...@li... =20
>>
>> [<mailto:jyt...@li...>mailto:jython-users-adm
>> in...@li...]On Behalf Of John E. =20
>> Conlon =20
>> Sent: Monday, March 19, 2001 4:22 PM =20
>> To: jyt...@li... =20
>> Subject: [Jython-users] How to call external commands=20
>>
>> Hi Jython users,=20
>>
>> I would like to replace my bat and sh startup scripts with jython py =20
>> scripts.=A0 But after experimentation I can not figure out how to call =
=20
>> external executables in my underlying system.=A0 =20
>> Have seen comments that the os.system(name) command is not yet
implemented. =20
>> =A0Is there any other way to launch external programs without the=
 os.system =20
>> command?=20
>>
>> thanks for any suggestions,=20
>>
>> John=20
>>
>> _______________________________________________ =20
>> Jython-users mailing list =20
>> Jyt...@li... =20
>>
>> <http://lists.sourceforge.net/lists/listinfo/jython-users>http://lists.so
>> urceforge.net/lists/listinfo/jython-users=20
>

************************************************************************
John E. Conlon
jc...@ve...
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