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Newsgroups: comp.lang.java.programmer
Date: Fri, 11 Jan 2013 11:41:00 -0800 (PST)
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Subject: Re: problem with multiword args and Runtime.exec()
From: FredK <fred.l.kleinschmidt@gmail.com>
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Xref: csiph.com comp.lang.java.programmer:21334

On Friday, January 11, 2013 8:33:39 AM UTC-8, Aryeh M. Friedman wrote:
> No matter what version of Runtime.exec I call I can not make a arg that h=
as multiple words in it (*NOT* multiple args but a single one) for example =
if I need to issue the following command in unix I can not find a way to do=
 the stuff in "'s as a single arg [the called program requires this... i.e.=
 it *MUST NOT* be treated as different elements of String[] args if it was =
a java program]):
>=20
>=20
>=20
> rdiff-backup --remote-schema "ssh -C -p9222 %s rdiff-backup --server" use=
rname@remoteserver::/path_to/filestobackup /path_to/backedupfiles

Your program gets the quotes string as a single argument.
If you want to pass that string as a single argument to something
like system(), you have to ensure that there are quotes around the
multi-word argument.

For example, assume arg1 contains the multiword value.
You cannot just say:
   sprintf( buffer, "ls %s", arg1 );
   system( buffer );

you have to use
   sprintf( buffer, "ls '%s'", arg1 );
   system( buffer );


--=20
Fred K