Date: Sat, 30 Jul 2005 17:24:04 +1200 From: Nick Larsen <larsen.nick@gmail.com> To: Damian Gerow <dgerow@afflictions.org> Cc: questions@freebsd.org Subject: Re: Shell scripts, SSH sessions, and for loops, oh my! Message-ID: <aceb91c30507292224488ada68@mail.gmail.com> In-Reply-To: <20050725003238.GD2461@afflictions.org> References: <20050725003238.GD2461@afflictions.org>
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Hi, You need to escape the metacharacters, so $ will be \$. Double quotes expand variables, single quotes do not, sou cou could just put it all in single quotes. The local system will see the $ as a literal, but the remote system will see it as a variable. Hope this helps some. Nick Larsen ( http://datanet.co.nz/ ) On 7/25/05, Damian Gerow <dgerow@afflictions.org> wrote: > (I don't really know /where/ to ask this question. It's not particularly > FreeBSD-centric, but the list has been good to me in the past, so hopeful= ly > nobody minds.) >=20 > I'm trying to write a shell script that runs a for loop in an SSH session= . > Simply, I'm trying to do this: >=20 > for HOST in `cat hostnames` ; do > ssh ${HOST} "for PROCESS in 01 02 ; do echo '${PROCESS}' ; done" > done >=20 > But because this is run in a script, that gets translated to: >=20 > for HOST in `cat hostnames` ; do > ssh ${HOST} "for PROCESS in 01 02 ; do echo '' ; done" > done >=20 > Which most definitely is not what I want. >=20 > I know a few ways around this -- expand the for loop, have a secondary > script, create a secondary script on-the-fly, etc. -- but I'm curious to = see > if I can convince sh to *not* interpret ${PROCESS}. I've tried escaping = it, > I've tried a double-dollar, and I've tried escaping the double-dollar: no= ne > have worked. >=20 > Does anyone have any ideas? >=20 > - Damian >=20 > P.S. Please reply privately as well to the list; thanks. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" >
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