shutdown script

[acous]

I am trying to put a button on the icewm panel that closes vector.

so I think there are 2 ways:

I write a script that makes 
su
password
shutdown

but there is a shutdown command from the "startmenu" is there a way to execute this from a terminal? then i dont need this script.


I know how to make buttons on the panel.

[Joe1962]

Which version of VL? On XFCE or KDE, there is already a panel applet you can add for shutdown.

[acous]

linux 5.8 standard,

i am using IceWM

[Joe1962]

Ah, sorry, I don't think Icewm has that, then again, I might be wrong because I've never used it much.

[acous]

but u can connect a panel button to a command, so if I make a script that shuts the computer down it should go.

is this possible?
one command to login as root   su?
then shutdown
 

[M0E-lnx]

I'm not sure how this would work since you need to be root to shutdown... other a very unsafe way (allowing all users to execute shutdown (ugly hack) ).

I'm not even sure a script could parse the password to su...
and even if it did, it would be a dirty shutdown. ( can't be good for your filesystem )

[acous]

yes, this seems like it wont be any good. Haven't found anything on the web either. Will not go further with this idea, thanks for help!

[uelsk8s]

the script would be easy as

Code:

#!/bin/bash
sudo /sbin/shutdown

[M0E-lnx]

but wont sudo need a password?

[uelsk8s]

it depends on how sudoers is setup on your system
for VL it should not need a password to shutdown or reboot

[LLL]

FYI:

The 'sudoers' Uel speaks of is a config-file responsible for controlling which users can 'sudo' for which commands. It's found at /etc/sudoers.

[acous]

thanks, got it working! 

[soren]

... it would be a dirty shutdown. ( can't be good for your filesystem )

I know this is probably off-topic, but I got curious about this.

Could you clarify why 'shutdown' is dirty and bad for the filesystem? The program seems to do nothing but send SIGTERM to all processes, (then SIGKILL, which isn't really necessary) and changing to runlevel X? (I can't remember which runlevel is for halting the system...)

I would think that this is pretty much what happens anyway, if you select the shutdown item in the menu?

I usually just punch in 'shutdown -h now' in the terminal, rather than reaching for the mouse... If I am risking a filesystem error every time, I would sure like to know it!!!

[bigpaws]

I would think that this is pretty much what happens anyway, if you select the shutdown item in the menu?

It is the same thing that happens.

I usually just punch in 'shutdown -h now' in the terminal, rather than reaching for the mouse... If I am risking a filesystem error every time, I would sure like to know it!!!

That is a fine, the only "dirty" shutdown is when SIGTEM has no be able to complete or having to
hard reboot. Other then that the shutdown procedure is the same.

HTH

Bigpaws