Для обновления Chrome. сделал 
скрипт  /etc/cron.daily/google-chrome1.sh следующего содержания:

>--
#!/bin/bash


# sources.list setting for google-chrome updates.
pack="https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
name="google-chrome-stable_current_x86_64.rpm"
names="google-chrome-stable"
namep=$(basename $name .rpm)

  # The initial install happens in the post-install scripts, but 
there have been
  # reports of configuration problems, so just verify that 
everything looks
  # good, and if not, try to install again.

/usr/bin/wget $pack -c -P /tmp/

namet=$(/bin/rpm -q $names)
namep1="$(/usr/bin/rpm -qp /tmp/$name)"

echo $namet $namep1
#!/bin/bash


# sources.list setting for google-chrome updates.
pack="https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
name="google-chrome-stable_current_x86_64.rpm"
names="google-chrome-stable"
namep=$(basename $name .rpm)

  # The initial install happens in the post-install scripts, but 
there have been
  # reports of configuration problems, so just verify that 
everything looks
  # good, and if not, try to install again.

/usr/bin/wget $pack -c -P /tmp/

namet=$(/bin/rpm -q $names)
namep1="$(/usr/bin/rpm -qp /tmp/$name)"

echo $namet $namep1
#!/bin/bash


# sources.list setting for google-chrome updates.
pack="https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
name="google-chrome-stable_current_x86_64.rpm"
names="google-chrome-stable"
namep=$(basename $name .rpm)

  # The initial install happens in the post-install scripts, but 
there have been
  # reports of configuration problems, so just verify that 
everything looks
  # good, and if not, try to install again.

/usr/bin/wget $pack -c -P /tmp/

namet=$(/bin/rpm -q $names)
namep1="$(/usr/bin/rpm -qp /tmp/$name)"

echo $namet $namep1

/bin/mv /tmp/$name /tmp/$namep1.rpm
if [ $? -eq 0 ];then
    if [  ! "$namet" = "$namep1"  ];then
        /bin/rpm -F --noscripts  --oldpackage /tmp/$namep1.rpm
        /bin/rm -f /etc/cron.daily/google-chrome
        echo "Update $namep1 !"
    else
        echo "Save $namep1"
    fi

fi
>--

и через postfix полусаю от него ежедневные сообщения.
Удобно :)
-- 
  А ещё говорят так  (fortune):
 
Philadelphia is not dull -- it just seems so because it is next 
to exciting Camden, New Jersey. 
________________________________________________________________________
С уважением Хихин Руслан