On 2019/04/29 00:21, Marco Bonetti wrote:
> > > +++ usr.sbin/sysupgrade/sysupgrade.sh 27 Apr 2019 11:54:48 -0000
> > > @@ -110,7 +110,19 @@ fi
> > >
> > > cd ${SETSDIR}
> > >
> > > -unpriv -f SHA256.sig ftp -Vmo SHA256.sig ${URL}SHA256.sig
> > > +unpriv -f SHA256.sig.tmp ftp -Vmo SHA256.sig.tmp ${URL}SHA256.sig
> > > +TMP_SHA=$(sha256 -q SHA256.sig.tmp)
> > > +
> > > +unpriv touch SHA256.sig
> > > +CUR_SHA=$(sha256 -q SHA256.sig)
> > > +
> > > +if [[ "${TMP_SHA}" = "${CUR_SHA}" ]]; then
> >
> > Why compare checksums?
> >
> > if cmp -s SHA256.sig SHA256.sig.tmp; then
>
> cmp exits 1 on different files, thus killing the script
That's not the case:
-e Errexit. Exit the shell immediately should an error occur or a
command fail. For pipelines and && and || constructs, only exit
if the last component fails. Errexit is ignored for while,
until, if, and elif lists and pipelines beginning ‘!’.
