Ubuntu，

Ubuntu，

Today i will write here ,some thing that i learned from ubuntu .

1.check the all process
px -aux

2.delete not empty directory
rm -fr dir

3.higher level
cd ..

4.top level
cd

5.update sourse/list:
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

sudo gedit /etc/apt/sources.list

sudo apt-get update


6. install deb:
dpkg -i

7.copy
sudo cp -i test.c /local/arm