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Author Topic: nobackup bootcode?  (Read 4253 times)

Offline clach04

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nobackup bootcode?
« on: September 28, 2009, 07:44:50 PM »
I'm sure I've read post(s) (by Roberts) on how to avoid the "Backup" checkbox being checked when trying to Shutdown, Reboot, Logout.

I know it is possiblel to exit out of TC with the Backup checkbox auto-unselected. E.g. using:

Code: [Select]
export BACKUP=0 ; exittc
 but I can't find the posts in the forum (my search foo is failing me) and I've tried a few random keywords with no luck. The skeleton .profile file always sets BACKUP to 1.

In a related topic is there some way to find out what TC boot codes there are, some are missing from  http://www.tinycorelinux.com/faq.html#bootcodes and I'm wondering if there is somewhere I could look (with grep or something). E.g. is there a place where there are many calls to showbootcodes that I could then see how the codes are used (or is this all in the kernel)?

Thanks in advance!

Chris

Offline gerald_clark

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Re: nobackup bootcode?
« Reply #1 on: September 28, 2009, 10:24:58 PM »
You can look at /etc/init.d/tc-config.

Offline mikshaw

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Re: nobackup bootcode?
« Reply #2 on: September 29, 2009, 04:27:44 AM »
If /opt/.backup_device is an empty file, there won't be a backup created.

If you want to leave the option open to backup on demand, you can add export BACKUP=0 to /home/tc/.profile and include that file in a tce.  If you do this, make sure you add .profile to .xfiletool.lst so it won't be overwritten if/when you decide to create a backup.

Offline tclfan

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Re: nobackup bootcode?
« Reply #3 on: September 29, 2009, 01:22:15 PM »
Would it take a lot to make this a part of gui configuration, as option to chose? E.g. personally I would prefer the 'backup' option to be off by default, to preserve pristine state each time, except what was intentionally backed up in result of planned setup process...

Offline roberts

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Re: nobackup bootcode?
« Reply #4 on: September 29, 2009, 05:03:45 PM »
I have, in fact, been considering a change in this area.
First, I see new users confused when they first encounter the exit routine.
No backup can be performed because, no location was ever specified.

Yet specifying such is just as simple as specifying the PPR tce directory.
Quoting from Core Concepts:
Quote
You can initially select the storage device by using the boot option of: restore=hdXY or after boot, by selecting "Backup/Restore" from the "Panel". Your backup will be automatically searched for and restored during subsequent booting.

On the other hand, I have provided the env BACKUP to control where a backup should be performed or not. Setting this to 0 stops any request to do a backup.

Then we have the norestore option. Using such will skip restoring backup data during this boot. However, currenly, you will still be pestered about doing a backup upon exit.

I am considering having the norestore option causing the backup box to become unchecked.
Thereby using norestore would also mean no backup, unless you take action to indicate otherwise.

To to help the new users, if no backup was specified and no norestore was indicated and BACKUP is set to 1 and a 'tce' was found, then default to using the 'tce' directory location. This would be consistent with the usbinstall method of defaulting the backup to be in the tce directory.
10+ Years Contributing to Linux Open Source Projects.

Offline clach04

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Re: nobackup bootcode?
« Reply #5 on: September 29, 2009, 07:41:31 PM »
You can look at /etc/init.d/tc-config.

Just the info I needed, thanks! Here is my quick-n-dirty grep that shows TC bootcodes (whether they are documented at http://www.tinycorelinux.com/faq.html#bootcodes or not, e.g. theme):

Code: [Select]
tc@box:~$ grep ')' /etc/init.d/tc-config |grep ';;' |grep -v 'case '
           waitusb*) WAITUSB=${i#*=} ;;
           lang*) LANGUAGE=${i#*=} ;;
           kmap*) KEYMAP=${i#*=} ;;
           tz*) TZ=${i#*=} ;;
           desktop*) DESKTOP=${i#*=} ;;
           user*) USER=${i#*=} ;;
           home*) MYHOME=${i#*=} ;;
           cryptohome*) CRYPTOHOME=${i#*=} ;;
           tcvd*) TCVD=${i#*=} ;;
           opt*) MYOPT=${i#*=} ;;
           local*) LOCAL=${i#*=} ;;
           dosswapfile*) DOSSWAP=1; SWAPFILE=${i#*=} ;;
           tce*) TCE=${i#*=} ;;
           resume*) RESUME=${i#*=} ;;
           host*) HOST=1 ;;
           settime*) SETTIME=${i#*=} ;;
           thm*) THEME=${i#*=} ;;
           bkg*) BACKGROUND=${i#*=} ;;
           nofstab) NOFSTAB=1 ;;
           syslog) SYSLOG=1 ;;
           noutc) NOUTC=1 ;;
           nodhcp) NODHCP=1 ;;
           checkfs) CHECKFS=1 ;;
           noicons) NOICONS=1 ;;
           text) TEXT=1 ;;
           superuser) SUPERUSER=1 ;;
           noswap) NOSWAP=1 ;;
           secure) SECURE=1 ;;
           protect) PROTECT=1 ;;
           ssh) SSH=1 ;;
           cron) CRON=1 ;;
           xsetup) XSETUP=1 ;;
           laptop) LAPTOP=1 ;;
           base) ONLYBASE=1 ;;
           norestore) NORESTORE=1 ;;
           noautologin) NOAUTOLOGIN=1 ;;
           pause) PAUSE=1 ;;

(modified with slight re-wording of what this list is)
« Last Edit: September 29, 2009, 08:05:49 PM by clach04 »

Offline clach04

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Re: nobackup bootcode?
« Reply #6 on: September 29, 2009, 08:00:45 PM »
I have, in fact, been considering a change in this area.
First, I see new users confused when they first encounter the exit routine.
No backup can be performed because, no location was ever specified.

......On the other hand, I have provided the env BACKUP to control where a backup should be performed or not. Setting this to 0 stops any request to do a backup.

......I am considering having the norestore option causing the backup box to become unchecked.
Thereby using norestore would also mean no backup, unless you take action to indicate otherwise.

To to help the new users, if no backup was specified and no norestore was indicated and BACKUP is set to 1 and a 'tce' was found, then default to using the 'tce' directory location. This would be consistent with the usbinstall method of defaulting the backup to be in the tce directory.

That would be great if this could be added. One thing I've noticed is that the user .profile is always the same as the skeleton version, i.e. "diff /etc/skel/.profile .profile" shows no differences.

How about when creating the user .profile script it isn't a straight copy but instead something like:


Code: [Select]
.  /etc/skel/.profile
This way users who want to backup their home directory will be more resilient to upgrades where the skeleton version may get updated.

From the tc-config script (setupHome) it looks like the skel dir is simply a straight copy (not just this file), maybe the "default" skeleton shared profile could be renamed/moved somewhere else?

Also if the norestore option was set the skeleton version could do something like:

Code: [Select]
if [ -z "${BACKUP}" ]
then
echo z true
export BACKUP=1
fi

so if backup is not set, it defaults to on, if it is set the setting is unchanged. The tc-config could then set BACKUP=0 if NORESTORE is set in the user .profile script, e.g.:

Code: [Select]
setupHome(){
   tar -C /etc/skel -cf - . | tar -C /home/"$USER" -xf -

   # gen profile
   touch /home/"$USER"/.profile
   chmod a+x  /home/"$USER"/.profile
   if [ "${NORESTORE}" = "1" ]
   then
       echo 'export BACKUP=0' >>  /home/"$USER"/.profile
   fi
   echo '. /etc/whatever_shared_profile_is_called' >>  /home/"$USER"/.profile

   chown -Rh "$USER".staff /home/"$USER"               
   chmod g+s /home/"$USER"               
}

The above is a quick copy/paste of the existing routine with a few (completely untested) tweaks.

Comments? Does this approach veer off the TC approach?

Chris

Offline mikshaw

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Re: nobackup bootcode?
« Reply #7 on: September 30, 2009, 06:14:33 AM »
The etc/skel directory, as far as I know, has always been used only as a source for default user configs, for when a new user is created.  After the user's home is created, those files have nothing to do with that particular user.  This is as it should be.  A user then has complete control over his personal files, and the system administrator can make whatever desired changes to /etc/skel without affecting the existing users.