Hi, simple and stupid but where to add/remove softwares?
Thx…
From the command line, use sudo apt-get remove package replacing package with the actual package name.
Ok, and command for the listing all installed softwares??
sudo dpkg –get-selections but you will see many, many packages listed. You will probably have to do some Googling.
You could also use Synaptic package manager. If it is not installed, open a terminal and type sudo apt-get install synaptic. Then open Synaptic from the system/administration menu, If you type the name of the application in its search bar, it will appear in the list and you can delete if from there.
Alternatively, you could install the software centre by typing sudo apt-get install software-center. Again, this can be opened from the system/administration menu. Again, type the name of the application in the search bar and the program will appear. You then have the option to install/uninstall it.
If you are new to Linux, I would recommend the software-centre as being the easiest to use to uninstall applications due to it being very GUI. It’s only real flaw being it is rather sluggish to use,
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I would have recommended Software Center, too, but is there a build of it available in the RPi2 repositories?
Ah…I hadn’t considered that…
Yes, software-center is available to install. I thought it was kinda odd that at least Synaptic wasn’t part of the image.
Now is the software-center installed and “extras” wiped out but still got a big problems with a free space.
How big is the installation of Mate? RPi2 have a 16Gb memory card but free space is running out…
???
Hmm…
Any ideas?
My original installation (15.04, not 15.10) was on a 8GB card, and had 1.7GB free.
My current install (15.10) is on a 64GB card, and is currently using 4.5GB. If you have a 16GB card, and it’s full then you have a problem. What have you installed?
The du command is your friend for helping to find where the space is being used.
Try this:
sudo du -hs /*
will show you what every top level directory is using. That will help narrow down where the space is being used. If (for example) you see that /etc seems to be using the space, then narrow that down with
sudo du -hs /etc/*
and so on. That should help you find out what’s eating the space.
You may see some ‘Cannot access’ errors. Don’t worry about those.
8,4M /bin
20M /boot
320K /dev
14M /etc
13M /home
241M /lib
16K /lost+found
4,0K /media
4,0K /mnt
181M /opt
du: cannot access ‘/proc/27339/task/27339/fd/3’: No such file or directory
du: cannot access ‘/proc/27339/task/27339/fdinfo/3’: No such file or directory
du: cannot access ‘/proc/27339/fd/3’: No such file or directory
du: cannot access ‘/proc/27339/fdinfo/3’: No such file or directory
0 /proc
12K /root
du: cannot access ‘/run/user/1000/gvfs’: Permission denied
6,8M /run
7,9M /sbin
4,0K /srv
0 /sys
44K /tmp
2,5G /usr
493M /var
So you are not using that much space. What does
brian@dalek:~$ df -h
Return?
I bet you didn’t follow the instructions to grow your filesystem to use the full capacity of the SD card.
Filesystem Size Used Avail Use% Mounted on
/dev/root 3,5G 3,5G 344K 100% /
devtmpfs 459M 0 459M 0% /dev
tmpfs 463M 312K 463M 1% /dev/shm
tmpfs 463M 6,8M 457M 2% /run
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 463M 0 463M 0% /sys/fs/cgroup
/dev/mmcblk0p1 64M 20M 45M 31% /boot
tmpfs 93M 40K 93M 1% /run/user/1000
As I suspected, you did not follow the instructions, and grow your filesystem to use the complete SD card.
okay 
so do i have to install system again?
No, just follow the installation instructions, and grow the filesystem.
Scroll down to Re-Size the filesystem and follow the instructions.
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sorry but i do not understund resize instructions 
messy for my mind… possible to make it simple?
What don't you understand? You run the fdisk command, then you:
Delete the second partition (d, 2), then re-create it using the defaults
(n, p, 2, enter, enter), then write and exit (w). Reboot the system, then
That means type d then 2 then n then p then 2 then press enter twice. (also press enter after typing each command)