also you would wanna add requires: bash for initscripts rpm. not sure how portable initscripts package was designed to be, would anyone ever use it outside redhat? if not making a commitment to bash could be reasonable.
just my .02 v On Sun, 28 Sep 2003, Jonathan Bartlett wrote: > The reason that normal startup scripts don't, is that there's no guarantee > /bin/sh will point to bash, or even that bash is installed. > > If you want to use bash, the first line should be /bin/bash instead of > /bin/sh, so it's obvious it needs bash specifically. > > Jon > > On Sun, 28 Sep 2003, [iso-8859-1] Manoj Kumar wrote: > > > Is there any reason not to use bash features in init > > scripts? > > Consider, for example, this fragment from > > /etc/sysconfig/network-scripts/ifup-post: > > > > DEVICETYPE=`echo $DEVICE | sed "s/[0-9]*$//"` > > REALDEVICE=`echo $DEVICE | sed 's/:.*//g'` > > if echo $DEVICE | grep -q ':' ; then > > ISALIAS=yes > > else > > ISALIAS=no > > fi > > > > In bash we can do this much faster with something like > > this: > > > > DEVICETYPE=$DEVICE > > while [[ $DEVICETYPE == *[0-9] ]]; do > > DEVICETYPE=${DEVICETYPE%[0-9]} > > done > > REALDEVICE=${DEVICE%%:*} > > if [[ $DEVICE == *:* ]]; then > > ISALIAS=yes > > else > > ISALIAS=no > > fi > > > > Okay, the loop that replaces the first line is messy, > > but it saves > > a couple of forks and an exec. The other two changes > > are both > > simpler and faster. > > > > So why do most init scripts use sed and grep to > > process > > strings? It can't be a desire to allow them to work > > with the > > Bourne shell (why would we want that anyway?) because > > some > > scripts do use bash features. > > > > [EMAIL PROTECTED] > > > > > > ________________________________________________________________________ > > Yahoo! India Matrimony: Find your partner online. > > Go to http://yahoo.shaadi.com > > > > > > _______________________________________________ > > Redhat-devel-list mailing list > > [EMAIL PROTECTED] > > https://www.redhat.com/mailman/listinfo/redhat-devel-list > > > > > _______________________________________________ > Redhat-devel-list mailing list > [EMAIL PROTECTED] > https://www.redhat.com/mailman/listinfo/redhat-devel-list > _______________________________________________ Redhat-devel-list mailing list [EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-devel-list