[NTLUG:Discuss] Strings in BASH, an easier way?

[richard witt]

On Wed, Dec 24, 2008 at 9:36 AM, Robert Citek <robert.citek at gmail.com> wrote:
> Do they give the same results?
>
> $ whatis  -r . | sort | uniq | wc -l
> 4728
>
> $ man -k . | sort | uniq | wc -l
> 4728
>
> $ for i in $(echo $PATH | cut -d: -f1- --output-delimiter=" "); do
>  for j in $(ls -1 $i) ; do
>    apropos $j
>  done
> done | sort | uniq | wc -l
> apropos: fatal: regex `[': Invalid regular expression
> 4688



rwitt at wslinux-rwitt ~ $ whatis -r .
whatis: -r: unknown option

rwitt at wslinux-rwitt ~ $ whatis --version
whatis from man-1.6f

Anyone have a clue why this does not work for me?