Issue

• BUG RHEL7 ksh and mksh not using alternatives
• I've noticed that ksh and mksh are not using the alternatives system which will cause problems with our scripts who need to switch one to the other. Is this deliberate or an oversight?

[root@shou18lkvm8 ~]# alternatives --display ksh
[root@shou18lkvm8 ~]# rpm -q --scripts ksh
postinstall scriptlet (using /bin/sh):
if [ ! -f /etc/shells ]; then
        echo "/bin/ksh" > /etc/shells
else
        if ! grep -q '^/bin/ksh$' /etc/shells ; then
                echo "/bin/ksh" >> /etc/shells
        fi
fi

/bin/systemctl try-restart systemd-binfmt.service >/dev/null 2>&1 || :
postuninstall scriptlet (using /bin/sh):
if [ ! -f /bin/ksh ]; then
        sed -i '/^\/bin\/ksh$/ d' /etc/shells
fi
verify scriptlet (using /bin/sh):
echo -n "Looking for ksh in /etc/shells... "
if ! grep '^/bin/ksh$' /etc/shells > /dev/null; then
    echo "missing"
    echo "ksh missing from /etc/shells" >&2
else
    echo "found"
fi
[root@shou18lkvm8 ~]# rpm -q --scripts mksh
postinstall scriptlet (using /bin/sh):
grep -q "^/bin/mksh$" /etc/shells 2>/dev/null || \
  echo "/bin/mksh" >> /etc/shells
postuninstall scriptlet (using /bin/sh):
if [ ! -x /bin/mksh ]; then
  sed -e 's@^/bin/mksh$@POSTUNREMOVE@' -e '/^POSTUNREMOVE$/d' -i /etc/shells
fi
[root@shou18lkvm8 ~]#