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 Forum index » Advanced Topics » Puppy Derivatives
THINSlacko
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Sun 25 Nov 2012, 04:53    Post subject:  
musher0 wrote:
I believe those files do some preliminary "closing" of Puppy stuff and then relay to the /etc/rc.shutdown script.

Thanks Musher0, looks like wmpoweroff is the one I need. It seems to be located at /usr/bin/wmpoweroff. Looks like it writes to /tmp/wmexitmode.txt then links to /usr/sbin/shutdownconfig, which writes to /tmp/shutdown_results which is read after control passes back to /usr/bin/xwin which calls /sbin/poweroff which calls /etc/rc.d/rc.shutdown. Darn it - It looks circular and complex. Maybe I shouldn't fiddle with it.
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01micko


Joined: 11 Oct 2008
Posts: 7017
Location: qld
PostPosted: Sun 25 Nov 2012, 05:20    Post subject:  
greengeek

What exactly do you want to do? It might be acheivable with a service script which are called with the "stop" parameter from /etc/rc.d/rc.shutdown. A lot easier than fiddling ..
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8-bit


Joined: 03 Apr 2007
Posts: 3012
Location: Oregon
PostPosted: Sun 25 Nov 2012, 06:40    Post subject:  
Jasper wrote:



I always make a visual comparison when checking MD5 sums, but, in case it may be of some general interest, perhaps there is an automated method?



Jasper, open a terminal in the directory that has the ISO.
Then type md5sum -c [name of the md5 checksum file]

You will be prompted if the files check OK.
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Sun 25 Nov 2012, 15:28    Post subject:  
01micko wrote:
What exactly do you want to do? It might be acheivable with a service script which are called with the "stop" parameter from /etc/rc.d/rc.shutdown. A lot easier than fiddling ..
I use ThinSlacko in a "dualboot from usb" environment on the Win XP netbook that I use for work, and I'm experimenting with ways of speeding up my day by avoiding having to wait for slow shutdowns caused by slow savefile writes to usb. I think I have found one good solution here:
http://www.murga-linux.com/puppy/viewtopic.php?t=67084
but I realised I needed to be careful not to jeopardise mounted filesystems (especially my NTFS XP stuff) so I was experimenting with ways of doing a normal "proper" shutdown but without letting snapmergepuppy do it's thing. I read the posts about commenting out the snapmergepuppy lines in rc.shutdown but that became an "all or nothing" solution which took away the "automatic save at shutdown" feature completely.
I wanted to allow shutdown saves 90% of the time, but have a desktop icon for "dump_everything_and_shutdown_superquick" for the other 10% of the time.

(I have also trialled the code that inserts a gtkdialog into the shutdown process, and that works fine as long as I am watching the screen during the shutdown, but I was hoping to find a method that is just "click and run - no questions asked")

I toyed with the idea of having two versions of rc.shutdown - one unmodified, and one modified by removal of snapmergepuppy, but then discovered it wasn't as simple as using a desktop icon to call the modified version. The other processes that exist between calling wmpoweroff and handing control to rc.shutdown make it more complex than I first realised.
I've thought of writing a script to rename my proposed "rc.shutdownMODIFIED" to rc.shutdown, then including a routine to rename things back to how they were - but I have some research to do before I'm going to risk it.
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01micko


Joined: 11 Oct 2008
Posts: 7017
Location: qld
PostPosted: Sun 25 Nov 2012, 16:13    Post subject:  
ICK! Skipping rc.shutdown is dangerous!

Why don't you create yourself a nice little shutdown gui with a checkbox called "save session" or something, , have it checked by default, when unchecked it produces a signal and then that can create a flag in /tmp called "No_save" or whatever.

In rc.shutdown, you will see a big "case" statement with quite a few cases. Find the one "13)". Now you test for the condition of whether "/tmp/No_save" exists and if so don't run the snapmerge. Something like:

Code:
13)
if [ ! -f /tmp/No_save" ];then #start big if
 All the snapmerge stuff happens here

fi #end big if
;;

next_case)whatever


Something like that will work, and make sure everything gets killed and unmounted cleanly.
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Sun 25 Nov 2012, 16:26    Post subject:  
So if I understand you correctly, you are suggesting something like the following:
1) Modify rc.shutdown section 13 that you have shown, to test for the flag in /tmp (ie, doesnt proceed with snapmergepuppy if flag is set)
2) Write a script that is able to set the flag in /tmp, then calls wmpoweroff and lets it do the rest
3) Add a desktop icon labelled "immediate shutdown without save" or something and symlink it to the script.

Is that the general concept?
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01micko


Joined: 11 Oct 2008
Posts: 7017
Location: qld
PostPosted: Sun 25 Nov 2012, 16:29    Post subject:  
greengeek wrote:
So if I understand you correctly, you are suggesting something like the following:
1) Modify rc.shutdown section 13 that you have shown, to test for the flag in /tmp (ie, doesnt proceed with snapmergepuppy if flag is set)
2) Write a script that is able to set the flag in /tmp, then calls wmpoweroff and lets it do the rest
3) Add a desktop icon labelled "immediate shutdown without save" or something and symlink it to the script.

Is that the general concept?

Yeah, that ought to do it.
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Mon 26 Nov 2012, 04:38    Post subject:  
01micko wrote:
Code:
13)
if [ ! -f /tmp/No_save" ];then #start big if
 All the snapmerge stuff happens here

fi #end big if
;;

next_case)whatever


Something like that will work, and make sure everything gets killed and unmounted cleanly.

OK, it's taken me a few hours but I think I've made it to first base. I've got your sample code working now, but I had to add another " (in the end I figured that maybe the leading quote marks were missing from the filename). It seems to work now (just with manual creation of /tmp/No_save) so next I will work on the script to set the flag file and call wmpoweroff.
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01micko


Joined: 11 Oct 2008
Posts: 7017
Location: qld
PostPosted: Mon 26 Nov 2012, 06:00    Post subject:  
Er.. sorry about the missing quote thing, was in a bit of a rush Embarassed

Doesn't even need quoting (no spaces Wink ). Glad it seems to be of some use to you anyway.
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Mon 26 Nov 2012, 12:58    Post subject:  
.
Thanks micko. I'm very happy with the outcome.

I have modified the /etc/rc.d/rc.shutdown as follows:

Code:
13) #PDEV1 and PUPSFS and PUPSAVE
  #/initrd/pup_rw has tmpfs, pup_ro1 has ${DISTRO_FILE_PREFIX}save.2fs file (PUPSAVE), pup_ro2 has PUPSFS file.
  #the above are in unionfs at /.
  if [ ! -f "/tmp/No_save" ];then
  #start big if
  #All the snapmerge stuff happens here
  echo "`eval_gettext \"Saving session to \\\${SAVEFILE} (\\\${SAVEPART})...\"`" >/dev/console
  #echo "Saving session to $SAVEFILE (${SAVEPART})..." >/dev/console
  /usr/sbin/snapmergepuppy /initrd/pup_ro1 /initrd/pup_rw
  fi #end big if
  ;;


then added a script "No_save" into /usr/bin as follows:

Code:
#!/bin/sh
echo "test" > /tmp/No_save
/usr/bin/wmpoweroff


and then dragged the script to the desktop and added an icon, so that if I want to do a safe shutdown without waiting for the final save I just click that new icon.

Many thanks for the help!
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2000kevin2000

Joined: 11 Jan 2013
Posts: 7
PostPosted: Fri 11 Jan 2013, 23:00    Post subject:  
I want to put this on a computer with 96MB RAM and a 166MHZ Pentium MMX... Would this be too taxing on the hardware, should I go for a build like TurboPup or one of the 486/32MB builds instead?
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Keef


Joined: 20 Dec 2007
Posts: 428
Location: Staffordshire
PostPosted: Sat 12 Jan 2013, 08:24    Post subject:  
The standard Slacko was quite slow on a P450 laptop I tried it on - and verrrrrry slow to get to the desktop.
THINSlacko is stripped down, but unlikley to be significantly quicker on something as old as your kit.
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Smithy


Joined: 12 Dec 2011
Posts: 189
PostPosted: Sat 09 Mar 2013, 08:33    Post subject:  
Currently running this distro and everything is working well, printing,network, jack, gimp etc. A new candidate for a musicians distro I reckon!
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greengeek

Joined: 20 Jul 2010
Posts: 1184
Location: New Zealand
PostPosted: Sat 09 Mar 2013, 14:13    Post subject:  
Hey Smithy, what's the "Partition save" icon you have on the desktop in the third pic?
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Smithy


Joined: 12 Dec 2011
Posts: 189
PostPosted: Sat 09 Mar 2013, 15:10    Post subject:  
Hi greengeek, it is the Linux version of Partition Saving.

http://damien.guibouret.free.fr/en/index_frame.html
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