run interactive scripts on shutdown

mistfire · 09-08-2023, 09:21 AM

How to run interactive yesno dialog when slackware is shutting down. The dialog works but unable to interact the dialog using keyboard. Is there any workaround for allowing keyboard input when dialog is shown during system shutdown?

drumz · 09-08-2023, 09:31 AM

What are you actually trying to accomplish? In almost all cases when a user wants the computer to shut down, he really wants it to shut down with asking again and again.

rizitis · 09-08-2023, 10:53 AM

Quote:

Originally Posted by mistfire

How to run interactive yesno dialog when slackware is shutting down. The dialog works but unable to interact the dialog using keyboard. Is there any workaround for allowing keyboard input when dialog is shown during system shutdown?

The "best" way to have what you want is to call your script from /etc/rc.d/rc.6 in line 79-80.
I dont know what you want to do... but in my case I have some scripts running during shutdown-restart from there and working very good. one of them is eliloconfig which running IF kernel was upgraded in the current session by slackpkg and I forgot to run eliloconfig and keybord works fine in dialog mode...

Note that when sysvinit-scripts rebuild or upgrade from Pat you have to keep your mind to not overwrite rc.6... or you must do it, then edit it again to place your script command in line 79-80...
But as I said idk what you want to do exactly...maybe this risking solution its not good for you.

Paulo2 · 09-08-2023, 11:14 AM

Another option would be in /etc/rc.d/rc.local_shutdown

rizitis · 09-08-2023, 11:47 AM

Quote:

Originally Posted by Paulo2

Another option would be in /etc/rc.d/rc.local_shutdown

Is it sure that keyboard will work properly to finish yesno dialog questions and commands when script is called from rc.local? I think no but dependents what exactly the user want to do...
I think rc.local_shutdown is the best option to stop daemons and services during shutdowns.

Paulo2 · 09-08-2023, 01:46 PM

Quote:

Originally Posted by rizitis

Is it sure that keyboard will work properly to finish yesno dialog questions and commands when script is called from rc.local? I think no but dependents what exactly the user want to do...
I think rc.local_shutdown is the best option to stop daemons and services during shutdowns.

I think it's a matter of try the proposed options

Paulo2 · 09-08-2023, 02:12 PM

In a -current VirtualBox vm, this is the result using /etc/rc.d/rc.local_shutdown

/etc/rc.d/rc.local_shutdown

Code:

#!/bin/bash
#
# /etc/rc.d/rc.local:  Local system initialization script.
#
# Put any local startup commands in here.  Also, if you have
# anything that needs to be run at shutdown time you can
# make an /etc/rc.d/rc.local_shutdown script and put those
# commands in there.

echo '$USER:' >/tmp/local_shutdown
echo $USER >>/tmp/local_shutdown
echo -e '\n$PATH:' >>/tmp/local_shutdown
echo $PATH >> /tmp/local_shutdown
echo -e '\nset:' >>/tmp/local_shutdown
set >>/tmp/local_shutdown
echo -e '\nenv:' >>/tmp/local_shutdown
env >>/tmp/local_shutdown
dialog --textbox /tmp/local_shutdown 0 0
dialog --yesno foobar 0 0

/tmp/local_shutdown

Code:

$USER:


$PATH:
/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin

set:
BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:globskipdots:hostcomplete:interactive_comments:patsub_replacement:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_LINENO=([0]="0")
BASH_LOADABLES_PATH=/usr/local/lib/bash:/usr/lib/bash:/opt/local/lib/bash:/usr/pkg/lib/bash:/opt/pkg/lib/bash:.
BASH_SOURCE=([0]="/etc/rc.d/rc.local_shutdown")
BASH_VERSINFO=([0]="5" [1]="2" [2]="15" [3]="1" [4]="release" [5]="x86_64-slackware-linux-gnu")
BASH_VERSION='5.2.15(1)-release'
BOOT_IMAGE=generic
CONSOLE=/dev/console
DIRSTACK=()
EUID=0
GROUPS=()
HOME=/
HOSTNAME=current.bfw
HOSTTYPE=x86_64
IFS=$' \t\n'
INIT_VERSION=sysvinit-3.08
MACHTYPE=x86_64-slackware-linux-gnu
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
PIPESTATUS=([0]="0")
PPID=1382
PREVLEVEL=3
PS4='+ '
PWD=/
RUNLEVEL=0
SHELL=/bin/sh
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=3
TERM=linux
UID=0
_='\nset:'

env:
SHELL=/bin/sh
RUNLEVEL=0
PWD=/
HOME=/
TERM=linux
INIT_VERSION=sysvinit-3.08
SHLVL=3
BOOT_IMAGE=generic
CONSOLE=/dev/console
PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
PREVLEVEL=3
_=/usr/bin/env

rizitis · 09-08-2023, 03:56 PM

Ok first thank you for the lesson

Second and of topic, I move it to /etc/rc.d/rc.local and after I removed

Code:

dialog --textbox /tmp/local_shutdown 0 0
dialog --yesno foobar 0 0

then I redirect it to

Code:

echo '$USER:' > /etc/sys
etc...

I test it in init4 with gdm and np found.
The interesting this way for me is that, I know what kernel I m running generic or huge in current session.

Code:

cat /etc/sys | grep BOOT

And a lot of other useful infos can be tracked this way easy if needed...
Thank you!

mistfire · 09-09-2023, 07:28 AM

Hello I have some observations.

When I logged into command line without launching desktop environment and run reboot/poweroff (even loginctl reboot/poweroff) the interactive script works. Both dialog works and the keyboard input works. However when reboot/poweroff was launched from desktop environment. The dialog works but the keyboard does not work to select option on the dialog.

Paulo2 · 09-09-2023, 08:23 AM

I didn't try, but Xfce has an option to run scripts at shutdown.
Settings Manager > Session and Startup > Application Startup > on shutdown

0XBF · 09-09-2023, 09:13 AM

I appended this test script to the end of my '/etc/rc.d/rc.local_shutdown' script...

Code:

dialog --title "Shutdown Question" \
--backtitle "rc.6 wants to ask you questions..." \
--yesno "Are you sure you want to shutdown?" 6 38
reply=$?
case $reply in
   0) echo "Okay lets shutdown";;
   1) echo "Haha, we're still running rc.6 baby!";;
   255) echo "[ESC] key pressed, but we're still running rc.6!";;
esac

and it does what its expected to do: print a yesno dialog box and wait for the user's input, triggered when rc.6 hooks rc.local_shutdown.

It works with restart & shutdown from plasma, xfce, gnome, and tty1. I'm not sure why you would get any different.
(Tested on Slackware 15.0)

mistfire · 09-09-2023, 06:27 PM

Quote:

Originally Posted by 0XBF

I appended this test script to the end of my '/etc/rc.d/rc.local_shutdown' script...

Code:

dialog --title "Shutdown Question" \
--backtitle "rc.6 wants to ask you questions..." \
--yesno "Are you sure you want to shutdown?" 6 38
reply=$?
case $reply in
   0) echo "Okay lets shutdown";;
   1) echo "Haha, we're still running rc.6 baby!";;
   255) echo "[ESC] key pressed, but we're still running rc.6!";;
esac

and it does what its expected to do: print a yesno dialog box and wait for the user's input, triggered when rc.6 hooks rc.local_shutdown.

It works with restart & shutdown from plasma, xfce, gnome, and tty1. I'm not sure why you would get any different.
(Tested on Slackware 15.0)

What is the terminal? Is it /dev/console or /dev/tty?