autoshutdown?? [Solved]

[Ed_P]

There is a /.config/autostart folder for scripts that automatically run when booting. Is there a similar idea for scripts to run when shutting down?

A Chrome module I am trying creates a very large cache folder which gets saved in my save.dat file. I would like to purge it when shutting down rather than save it.

[Bogomips]

rc.local_shutdown, but not sure if executed before saving changes.

[Ed_P]

Ok Bogomips that is where I have it but it isn't working.

rc.local_shutdown

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#!/bin/sh
#
# rc.local_shutdown
#
# This script is executed at shutdown (rc0) and reboot (rc6).
# You need to make it executable before using.
#
# Example:
# /etc/rc.d/rc.samba stop
/home/guest/chromecache.sh

chromecache.sh

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#!/bin/sh

if [ -d "/home/guest/.cache/google-chrome/Default/Cache/" ]; then
  rm /home/guest/.cache/google-chrome/Default/Cache/*
  echo "Chrome cache purged."
else
  echo "No Chrome cache."
fi

No echos when shutting down. And the script works in terminal mode. I'm missing something.

[tome]

I think you can replace cache directory with symlink, for example symlink to /mnt/sda4/DefaultCache2 or to /mnt/ramd/cache (mkdir -p /mnt/ramd
mount ramdisk /mnt/ramd -t tmpfs -o size=105M
mkdir -p /mnt/ramd/cache
chown guest:guest /mnt/ramd/cache)

See at '/etc/changes-exit.conf' also.

[Ed_P]

Well I found the problem with rc.local_shutdown, it needed to be made executable!!

http://forum.porteus.org/viewtopic.php? ... 696#p32711

Your symlink idea is interesting tome. I was thinking of finding a way to redirect the chrome cache to the /tmp/ directory to solve the savedata space issue. And doing that would eliminate the concern of hundreds of thousands of .wh. files from all the cache deletes.

[Bogomips]

@Ed Running in ram, and having not that much ram at my disposal, done more or less what you have in mind, within the guiexec script, for the PaleMoon cache:

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mkdir .cache/'moonchild productions'
sudo mount --bind /mnt/sda4/PaleMoon/moonchild .cache/'moonchild productions'

[Ed_P]

hmmmm Not working for me.

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guest@porteus:~$ chrome.sh
mkdir: cannot create directory ‘/tmp/google-chrome/Cache/’: No such file or directory
sudo: invalid option -- '-'
usage: sudo [-D level] -h | -K | -k | -V
usage: sudo -v [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-u user
            name|#uid]
usage: sudo -l[l] [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-U user
            name] [-u user name|#uid] [-g groupname|#gid] [command]
usage: sudo [-AbEHknPS] [-C fd] [-D level] [-g groupname|#gid] [-p prompt] [-u
            user name|#uid] [-g groupname|#gid] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-C fd] [-D level] [-g groupname|#gid] [-p prompt] [-u
            user name|#uid] file ...

The part of the code failing:

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if [ ! -d /tmp/google-chrome/Cache ]; then
   mkdir  /tmp/google-chrome
   mkdir  /tmp/google-chrome/Cache
   sudo mount --bind /tmp/google-chrome/Cache  /home/guest/.cache/google-chrome/Default/Cache
fi 

And

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guest@porteus:~$ ls /tmp
qtsingleapp-qlippe-2dfb-3e8=  qtsingleapp-qlippe-2dfb-3e8-lockfile
guest@porteus:~$ 

But

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guest@porteus:~$ mkdir  /tmp/google-chrome
guest@porteus:~$ mkdir  /tmp/google-chrome/Cache
guest@porteus:~$ ls /tmp
google-chrome/                qtsingleapp-qlippe-2dfb-3e8-lockfile
qtsingleapp-qlippe-2dfb-3e8=
guest@porteus:~$ ls /tmp/google*
Cache/
guest@porteus:~$ sudo mount --bind /tmp/google-chrome/Cache  /home/guest/.cache/google-chrome/Default/Cache
Password:
mount: mount point /home/guest/.cache/google-chrome/Default/Cache does not exist
guest@porteus:~$ 

The last error being understandable since chrome hasn't been run yet.

[Bogomips]

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if [ ! -d /tmp/google-chrome/Cache ]; then
   mkdir  /tmp/google-chrome
   mkdir  /tmp/google-chrome/Cache
   sudo mount --bind /tmp/google-chrome/Cache  /home/guest/.cache/google-chrome/Default/Cache
fi 

Replace with:

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set -x;  # Diagnostic output
if [ ! -d /tmp/google-chrome/Cache ]; then
   mkdir  -p  /tmp/google-chrome/Cache;  # Less chance of invisible chars creeping in
   sudo mount --bind /tmp/google-chrome/Cache  /home/guest/.cache/google-chrome/Default/Cache
fi 

And let's see what we get.

[Ed_P]

And let's see what we get.

The results make no sense at all.

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guest@porteus:~$ ls /tmp
qtsingleapp-qlippe-2dfb-3e8=  qtsingleapp-qlippe-2dfb-3e8-lockfile
guest@porteus:~$ chrome.sh
+ '[' '!' -d /tmp/google-chrome/Cache/ ']'
+ mkdir -p /tmp/google-chrome/Cache/
+ sudo --bind /tmp/google-chrome/Cache /home/guest/.cache/google-chrome/Default/Cache
sudo: invalid option -- '-'
usage: sudo [-D level] -h | -K | -k | -V
usage: sudo -v [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-u user
            name|#uid]
usage: sudo -l[l] [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-U user
            name] [-u user name|#uid] [-g groupname|#gid] [command]
usage: sudo [-AbEHknPS] [-C fd] [-D level] [-g groupname|#gid] [-p prompt] [-u
            user name|#uid] [-g groupname|#gid] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-C fd] [-D level] [-g groupname|#gid] [-p prompt] [-u
            user name|#uid] file ...
+ read
+ google-chrome-stable 'https://us.forgeofempires.com/page/ '
^C
guest@porteus:~$ ls /tmp
google-chrome/                qtsingleapp-qlippe-2dfb-3e8-lockfile
qtsingleapp-qlippe-2dfb-3e8=
guest@porteus:~$ 

I tried the mkdir -p option initially and had the same error, so I changed it to individual mkdirs. Now it works?? What does the set do? I have never seen it before.

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set -x;  # Diagnostic output!!
if [ ! -d /tmp/google-chrome/Cache/ ]; then
   mkdir -p /tmp/google-chrome/Cache/
   sudo --bind /tmp/google-chrome/Cache   /home/guest/.cache/google-chrome/Default/Cache
fi

[Bogomips]

sudo mount -- bind 8)

-x shows step by step progress, a blow by blow account

btw your sudo ok? sudoers set and you don't have to submit pw?

Search for set in http://man.cx/bash

[Ed_P]

sudo mount -- bind 8)

I had mount originally. What the heck??

Will retest and get back to you.

[Ed_P]

Ok, it seems to be working.

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guest@porteus:~$ chrome.sh
/mnt/sda5/porteus3.0/Modules/zchrome.xzm

Chrome ready to run. Press Enter when done using it.
+ '[' '!' -d /tmp/google-chrome/Cache/ ']'
+ mkdir -p /tmp/google-chrome/Cache/
+ sudo mount --bind /tmp/google-chrome/Cache /home/guest/.cache/google-chrome/Default/Cache
Password:Password:
mount: mount point /home/guest/.cache/google-chrome/Default/Cache does not exist



guest@porteus:~$ ls /tmp
google-chrome/                qtsingleapp-qlippe-2dfb-3e8-lockfile
qtsingleapp-qlippe-2dfb-3e8=
guest@porteus:~$ ls /tmp/google*
Cache/
guest@porteus:~$ 

But more questions.

How does one turn off the set -x command?

Would

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ln -sf /tmp/google-chrome/Cache    /home/guest/.cache/google-chrome/Default/Cache

accomplish the same thing as the mount --bind command?

I need to reboot and retry this without the set -x command.

OK

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guest@porteus:~$ chrome.sh
/mnt/sda5/porteus3.0/Modules/zchrome.xzm

Chrome ready to run. Press Enter when done using it.
Password:Password:
mount: mount point /home/guest/.cache/google-chrome/Default/Cache does not exist


Password:
/mnt/sda5/porteus3.0/Modules/zchrome.xyzm
guest@porteus:~$ google-chrome/                qtsingleapp-qlippe-2dfb-3e8-lockfile

[Bogomips]

How does one turn off the set -x command?

set +x

Would

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ln -sf /tmp/google-chrome/Cache    /home/guest/.cache/google-chrome/Default/Cache

accomplish the same thing as the mount --bind command?

Which is better I was wondering. Sometimes I've found symlink not to work, so prefer to do mount. AFAIK magic folders also use the mount.

btw suggest enhancing by creating the cache directory:

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if [ ! -d /tmp/google-chrome/Cache ]; then
   mkdir  -p  /tmp/google-chrome/Cache;
  c=/home/guest/.cache/google-chrome/Default/Cache
  [[ ! -d $c ]] && mkdir -p $c
   sudo mount --bind /tmp/google-chrome/Cache  $c
fi 

[Ed_P]

Which is better I was wondering. Sometimes I've found symlink not to work, so prefer to do mount. AFAIK magic folders also use the mount.

The symlink I don't think would care if the .cache folder exists when executed. Not sure it also may not require sudo.

btw suggest enhancing by creating the cache directory:

Code: Select all

if [ ! -d /tmp/google-chrome/Cache ]; then
   mkdir  -p  /tmp/google-chrome/Cache;
  c=/home/guest/.cache/google-chrome/Default/Cache
  [[ ! -d $c ]] && mkdir -p $c
   sudo mount --bind /tmp/google-chrome/Cache  $c
fi 

Yes, a variable or two would help. And the && is an interesting approach also.

I've really enjoyed this thread Bogomips. It's like the old days for me, asking questions and learning new things. Thank you.

Newest problem, running chrome I don't see anything in either cache location.

[Bogomips]

Watch movie in browser and use:

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find . -xdev -size +70M

which is what I used in order to find the PaleMoon cache.

I've really enjoyed this thread Bogomips. It's like the old days for me, asking questions and learning new things. Thank you.

I'm all for sharing knowledge and learning new things, myself included.