Bash expansion question

Corey Edwards tensai at zmonkey.org
Wed Feb 18 15:06:16 MST 2009


On Wed, 2009-02-18 at 14:24 -0700, Chris wrote:
> On Wed, Feb 18, 2009 at 1:50 PM, Corey Edwards <tensai at zmonkey.org> wrote:
> > Perhaps there's a default set in your build of bash.
> 
> As suspected, there was a loose nut between the seat and the keyboard.
> 
> The empty output of "echo $IFS" misled me into thinking that IFS was unset.
> 
> I see now that "echo" does not display the values of bash shell
> variables.  One can grep the output of "set" to find them:

Or rather, the IFS setting was interfering with bash showing you the
contents of IFS.

        [cedwards at pheasant ~]$ echo foo${IFS}bar
        foo bar
        [cedwards at pheasant ~]$ echo "foo${IFS}bar"
        foo,bar

Corey

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