maemo.org - Talk - Clean rootfs

maemo.org - Talk (https://talk.maemo.org/index.php)

- Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)

- - Clean rootfs (https://talk.maemo.org/showthread.php?t=38893)

Re: Clean rootfs

Quote:

Originally Posted by sixracer (Post 962715)

I accidentally extracted NITDroid to my root directory (for got a cd /And). Is this a good way to clean out the excess files?

That's exactly what I managed to do yesterday! If anyone knows what to do now, please share your knowledge.

I was installing NITDroid following the instructions shown in this video: http://www.youtube.com/watch?v=HF0uv0nJIj0 and I'm 100% sure I did everything precisely as in the video. My SD card was brand new, plugged it in straight from the package before trying to install NITDroid. What the heck went wrong?

Re: Clean rootfs

Quote:

Originally Posted by khuong (Post 1046462)

dpkg -l | grep ^rc (this command will show you a list of apps configuration files still left in the system from uninstalled app)
dpkg --purge <appname> (This will remove it)

I got a huge list of config files. Anyway to delete all those (that are not required) files at once?

Re: Clean rootfs

Quote:

Originally Posted by Joseph9560 (Post 1162228)

I got a huge list of config files. Anyway to delete all those (that are not required) files at once?

May be this even might be done with a one-liner, but i use those two lines

Code:

dpkg -l |awk '/^rc/{ print $2 }' > list

dpkg --purge $(<list)

Re: Clean rootfs

To Clean rootfs or Free up rootfs space, there's a WIKI page.
The most effective i did was Moving the microb-engine (has to be done as root) will save 13.9 Mb:
these are the commands

Code:

mv /usr/share/microb-engine /home/opt

ln -s /home/opt/microb-engine /usr/share/microb-engine

Warning !
First save both commands on a file on your N900 to be sure.
If you do the first command and you lost connection, opening pages is not possible.
Also found the browser opening pages takes a while...
To speed up microb again, this can help you and there's no difference anymore :)

Re: Clean rootfs

Quote:

Originally Posted by SiO2 (Post 447858)

Guys, I don't know whether this information deserves a new topic but yesterday I've found a way to clean the N900 rootfs that worked fine on my device. Please handle this information with care, since I've read about people running ubuntu or debian who got the system erased by this command.
I've typed this (as root):

apt-get autoremove

my free rootfs increased by 8% but before I recommend to try this:

apt-get --simulate autoremove

this command simulates the autoremove action so, you can check the output in order to be sure that only useless packages will be removed.

Try also: apt-get moo

This won't help you in rootfs cleaning but is absolutely safe! ;-)

Code:

Nokia-N900:~# rm /var/lib/dpkg/*.old

routinely frees up to 5 MB

Re: Clean rootfs

Quote:

Originally Posted by misterc (Post 1162332)

Code:

Nokia-N900:~# rm /var/lib/dpkg/*.old

routinely frees up to 5 MB

I don't see anything like that in my N900, thought I can see something like /var/lib/dpkg/*old

There seems to be three files that would match the criteria and would free up about 2.7Mb in my case. Is that what you are talking about? Or is it indeed *.old?

Re: Clean rootfs

Quote:

Originally Posted by michaaa62 (Post 1162261)

May be this even might be done with a one-liner, but i use those two lines

Code:

dpkg -l |awk '/^rc/{ print $2 }' > list

dpkg --purge $(<list)

Doesn't seems to work with and without root.

dpkg: --purge needs at least one package name argument.

Re: Clean rootfs

"dpkg -l | grep ^rc | cut -d " " -f 3 | xargs dpkg --purge" as root worked. About 1.5Mb root space freed.

Re: Clean rootfs

Quote:

Originally Posted by Joseph9560 (Post 1164747)

my mistake, indeed...
meant to be

Code:

Nokia-N900:~# rm /var/lib/dpkg/*~old

guess *old amounts to the same

Re: Clean rootfs

here is a wiki page that 'optifies' a few packages part of Maemo core (thus, can't be optified prior to install, any more, obviously :p
alas :mad:
CSSU, anyone :D )

Free up rootfs space

YMMV...

Quote:

Some instructions here may cause serious problems. When unsure, see General precautions
Backing up your data is recommended. In case of trouble you might need to re-flash your device.

here are most lines...

Code:

rm /var/lib/dpkg/*old

mv /usr/share/nokia-maps /home/opt/

ln -s /home/opt/nokia-maps /usr/share/nokia-maps

mv /usr/share/microb-engine /home/opt

ln -s /home/opt/microb-engine /usr/share/microb-engine

mv /usr/share/fonts /home/opt 

ln -s /home/opt/fonts /usr/share/fonts

mv /usr/share/locale /opt

ln -s /opt/locale /usr/share/locale

mv /usr/share/themes/ /home/opt/usr/share/themes

ln -s /home/opt/usr/share/themes /usr/share/themes

dpkg --purge tutorial-home-applet 

dpkg -l|grep ^rc

last command has been rewritten by Joseph9560 as

Code:

dpkg -l | grep ^rc | cut -d " " -f 3 | xargs dpkg --purge

nota bene: moving & relinking the theme part means you can't install any new themes unless you delete the link & move the files back to their original place...

i use those exact instructions routinely when reflashing my N900s (now mostly the test model :cool:) and never had any problems
then again, i don't give a darn about themes :rolleyes: