Re: Setting up an auto system update
By: Vincent Coen to All on Wed Oct 05 2022 18:34:40

Hello All!

Under Bullseye on primary system Pi 3B+ as a x86 (and Bullseye on Pi4 X64) -
Pi 3B+ . . .
I have as a cron job a simple /usr/bin/apt update
I would like to replace it with upgrade but cannot find a way to do it as it requires a response to the msg (not exact)
update [Y/n) etc.

So I looked at a simple bash script that has :

/usr/bin/apt upgrade << EOF
Y
but that does not work (because of the 2nd parameter to it so then tried : '/usr/bin/apt upgrade' << EOF that also produces

it won't work ... all you gott a do..... *drum roll*



apt upgrade -y


:D

regards
===

Charles Blackburn
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On Wed, 05 Oct 2022 18:34:40 +1300, Vincent Coen wrote:

Any one with a working solution ?

echo "Y" | /usr/bin/apt upgrade

Basically want to run this say weekly to ensure it is kept up to date as
the system runs normally stand alone with one application written in
Cobol - hey,
I'm an old school prog back to the times of M/F's, mini's then S100 bus micros.

Nowt wrong with COBOL (or stuff you never hear of these days such as the Sculptor 4GL). I wrote a lot of both on mainframes and minis - and thought
they beat the crap out of PL/1 and (especially) RPG3.

======

FWIW I wrote myself a scriptable menu handler in C (cribbed from Sculptor) which I run on my house server and use to drive my weekly backups. For
these I use a cycle of two 1GB WD Elements USB drives, which normally live
in a firesafe. One is taken out and connected to the house server when it
is backup time. These systems run Redhat Fedora Linux.

The menu handler uses rsync, run from a bash script, to make backups (in different root directories) for the house server, this laptop and anything
else I think deserves backing up, immediately before upgrading each
system.

There are two copies of rsync used for this: the one on the system being
backed up sends changes to the second one on the house server, which
applies the changes to the USB drive. The whole process 'just works' and
is fast because only changes are sent to the house server and applied to
the backup disk.

This also works equally well for backing up RaspberryPis: rsync is
available for Raspbian.


--

Martin | martin at
Gregorie | gregorie dot org

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On Wed, 05 Oct 2022 19:38:04 +0000, Martin Gregorie wrote:

On Wed, 05 Oct 2022 18:34:40 +1300, Vincent Coen wrote:

Any one with a working solution ?

echo "Y" | /usr/bin/apt upgrade

yes | /usr/bin/apt upgrade

Basically want to run this say weekly to ensure it is kept up to date
as the system runs normally stand alone with one application written in
Cobol - hey, I'm an old school prog back to the times of M/F's, mini's
then S100 bus micros.

//SYSIN DD *
Ex-mainframe COBOL/Assembler programmer here. I hear you.
/*

--
Lew Pitcher
"In Skills, We Trust"

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Hello Charles!

Wednesday October 05 2022 14:37, you wrote to me:

Re: Setting up an auto system update
By: Vincent Coen to All on Wed Oct 05 2022 18:34:40

Hello All!

Under Bullseye on primary system Pi 3B+ as a x86 (and Bullseye on
Pi4 X64) - Pi 3B+ . . . I have as a cron job a simple
/usr/bin/apt update I would like to replace it with upgrade but
cannot find a way to do it as it requires a response to the msg
(not exact) update [Y/n) etc.

So I looked at a simple bash script that has :

/usr/bin/apt upgrade << EOF
Y
but that does not work (because of the 2nd parameter to it so
then tried : '/usr/bin/apt upgrade' << EOF that also produces

it won't work ... all you gott a do..... *drum roll*

apt upgrade -y

Thanks that works, now why could I not see that param - may be not in the man apt nor in info apt displays :)


Vincent

--- Mageia Linux v8 X64/Mbse v1.0.8/GoldED+/LNX 1.1.5-b20180707
* Origin: Air Applewood, The Linux Gateway to the UK & Eire (2:250/1)

Lew Pitcher <lew.pitcher@digitalfreehold.ca> writes:

On Wed, 05 Oct 2022 19:38:04 +0000, Martin Gregorie wrote:

On Wed, 05 Oct 2022 18:34:40 +1300, Vincent Coen wrote:

Any one with a working solution ?

echo "Y" | /usr/bin/apt upgrade

yes | /usr/bin/apt upgrade

apt-get has a -y option for this purpose.

But the answer to the OP’s question is https://wiki.debian.org/UnattendedUpgrades

--
https://www.greenend.org.uk/rjk/

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Re: Setting up an auto system update
By: Vincent Coen to Charles Blackburn on Wed Oct 05 2022 22:04:13

it won't work ... all you gott a do..... *drum roll*
apt upgrade -y

Thanks that works, now why could I not see that param - may be not in the man apt nor in info apt displays :)

it's buried in different man pages for sure, but is (i thought) common knowledge :D

-y, --yes, --assume-yes
Automatic yes to prompts; assume "yes" as answer to all prompts and run non-interactively. If an undesirable situation, such as changing a held package, trying to install an unauthenticated
package or removing an essential package occurs then apt-get will abort. Configuration Item: APT::Get::Assume-Yes.

you can also do

--assume-no
Automatic "no" to all prompts. Configuration Item: APT::Get::Assume-No.

and this will do everything OTHER than the actual install/update

-s, --simulate, --just-print, --dry-run, --recon, --no-act
No action; perform a simulation of events that would occur based on the current system state but do not actually change the system. Locking will be disabled (Debug::NoLocking) so the system
state could change while apt-get is running. Simulations can also be executed by non-root users which might not have read access to all apt configuration distorting the simulation. A notice
expressing this warning is also shown by default for non-root users (APT::Get::Show-User-Simulation-Note). Configuration Item: APT::Get::Simulate.

Simulated runs print out a series of lines, each representing a dpkg operation: configure (Conf), remove (Remv) or unpack (Inst). Square brackets indicate broken packages, and empty square
brackets indicate breaks that are of no consequence (rare).

regards
===

Charles Blackburn
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