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

[Brian Z. <bz...@ig...>]

Here's an interesting article pertaining to Runtime/Process:
=20
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
<http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html>=20
=20
brian

-----Original Message-----
From: jyt...@li...
[mailto:jyt...@li...]On Behalf Of Brian
Zimmer
Sent: Monday, March 19, 2001 4:42 PM
To: John E. Conlon; jyt...@li...
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
 Process 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
 e.append(r)=20
 r =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:jyt...@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.  But after experimentation I can not figure out how to call=20
external executables in my underlying system. =20

Have seen comments that the os.system(name) command is not yet
implemented.=20
 Is there any other way to launch external programs without the
os.system=20
command?=20

thanks for any suggestions,=20

John=20

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