On Wed, Apr 03, 2024 at 12:50:50AM +0200, Paul D wrote:
> On 2024-04-02 23:00, Elliott Mitchell wrote:
> > Second, appears the ${parameter:offset:length} may not be POSIX. I
> > dislike this, but do not object since OpenWRT's shell is built with this
> > functionality enabled.
>
>
> UUOC! Ha. Yes, there are a few non POSIXy things in openwrt ash. A number of
> other scripts already take advantage of them so it's OK, if it avoids several
> external calls to e.g. cut or td.
>
Yes, which is why even though I disliked it, I wouldn't be able to reject
merely for that.
> How about POSIX native array IFS split?
>
>
> IFS=' ' set -- $(hexdump -vn 5 -e '5/1 "%02x "' /dev/urandom)
>
> uci -q batch <<-EOF >/dev/null
> set network.globals.ula_prefix=fd$1:$2$3:$4$5::/48
> commit network
> EOF
That is certainly better than the solution I came up with. More
importantly, it addresses concern #1. Now just need a better commit
message and hopefully the committers would find it acceptable.
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