Am Thu, Feb 01, 2007 at 03:30:46AM -0500, schrieb matthew sporleder:
> On 2/1/07, Jan Danielsson <jan.m.danielsson@gmail.com> wrote:
> >Hello all,
> >
> >   (Using /bin/sh)
> >
> >   I have a set of backup scripts which contain this:
> >
> >   tar .... | bzip2 | gpg -r $ENCTO > blarg.tar.bz2.gpg
> >
> >   ENCTO is a variable which is set prior to running the scrips. Now I
> >have realized that I need to encrypt to several recipients. I.e.:
> >
> >   tar .... | bzip2 | gpg -r foo -r bar > blarg.tar.bz2.gpg
> >
> >   Is there some painfully obvious way to construct the string:
> >
> >   "-r foo -r bar"
> >
> >   from the environment variable:
> >
> >   ENCTO=foo bar
> >
> >   (Using space as separator)
> >
> >   "for" obviously uses file names, and doesn't seem to be able to use
> >space separated lists for processing.
> >
> >   (Don't even suggest that I should create two files named "foo" and
> >"bar" somewhere so that I can use "for". Even I realize how ugly *that*
> >is. ;-)
> 
> 
> Easy but slow:
> FOO="foo bar"
> echo $FOO | awk '{ print "-r " $1 " -r " $2 }'
> -r foo -r bar
> 
> Possibly faster:
> for x in `echo $FOO`
> do echo -n "-r $x "
> done

A other way:
-r ${FOO%\ *} -r ${FOO#*\ }

> 
> And, obviously, you can do whatever you need to do with the output.
Bye Thomas