I am not able to make any operations right now, becauze it is related to memory , when I try to run a project in Eclipse it says no memory in the device
and moreover I am not able to watch a video in youtube (it always gets stuck ) and

I am not able to download something such problem occurs " tmp could not be saved, because an unknown error occurred.

Try saving to a different location."



df -l
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 24939636 23389412 283332 99% /
none 1950636 716 1949920 1% /dev
none 1958364 3700 1954664 1% /dev/shm
none 1958364 228 1958136 1% /var/run
none 1958364 0 1958364 0% /var/lock
/dev/sda4 236277756 148818100 87459656 63% /host




how can I solve this problem ? could u please help me ?

Hi and Welcome to LQ.
Your usage shows that your Loop Device is 99% used. I guess that's why Eclipse says no memory in the device. Presumably you need to make some room on the device.
ciao,
jdk

That the output of df shows a loop-device indicates that you are not running an installed system, but a Live system. If you want to run heavy applications (like Eclipse) I would recommend to actually install Ubuntu.