[lug] Bash question

[Zan Lynx]

On Sat, 2004-07-10 at 02:52, Daniel Webb wrote:
> $ X=nothing
> $ read X <<< $(echo something)
> $ echo $X
> something
> 
> $ X=nothing
> $ echo something | read X
> $ echo $X
> nothing
> 
> Why???
> 
"Each command in a pipeline is executed as a separate process (i.e., in
a subshell)." -- bash man page

Variables inside a subshell stay in there.
If you want to feed a command into a read and do stuff to it, a handy
method is this:
echo something | while read X; do something $X; done
-- 
Zan Lynx <zlynx at acm.org>
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