On 18/08/2014 15:18, Kerin Millar wrote:
On 18/08/2014 15:02, Stroller wrote:
On Mon, 18 August 2014, at 1:16 pm, Kerin Millar
<kerfra...@fastmail.co.uk> wrote:
...
(( count += matches ))
done < <(grep -hcm1 -F "$string" ${files[*]})
Oh, this is lovely.
I've learned some things today.
if (( count == ${#files[@]} )); then
May I ask why you prefer these brackets for evaluation, please?
There was no particular reason, other than to maintain consistency in
the example (both for evaluation and as an alternative to expansion).
Sometimes, I find double square brackets to be a bit of an eyesore, but
do tend to use them more often than not.
I particularly like double parentheses for checking exit codes assigned
to variables. For example:
(( $? )) && echo "something went wrong"
As opposed to having to perform an explicit comparison:
[[ $? != 0 ]] && echo "something went wrong"
Oops, I meant to use the -ne operator there. Not that it actually makes
a difference for this test.
--Kerin
