Hello anonymous,
> grep -r index *.rb
this is a common misunderstanding. The issue is that shell performs
the "expansion" of *.rb before grep starts.
The recursive search is, in genereal case, done by a special tool
named find/xargs:
find . -name '*.rb' |xargs grep index
But the re are also other alternatives, like grep's --include option
or Z shell and its recursive expansion
grep -r index **/*.rb
And, BTW, this was not the right place to ask, you got this answer by
shere luck.
Regards,
Stepan Kasal
