Under linux, if the system garbage changes greatly, it will lead to insufficient system space. Using df -h, you can see which user has a large directory space utilization. If it is large, you need to execute some commands to slim down the system:

1, sudo apt-get automatic cleaning

sudo apt-get clean

Sudo apt-get automatic deletion

These three commands mainly clean up the upgrade cache and useless packages.

2. Clean up the cache file of opera/firefox:

ls ~/。 opera/cache4|xargs rm -f

ls ~/。 mozilla/firefox/*。 Default/Cache |xargs rm -f

3. Clean up the isolation package under Linux:

In the graphical interface, we can use: gtkorphan

Sudo apt-get installs gtkorphan -y

Under the terminal command, we can use: deborphan.

Sudo apt-get install deborphan -y

4. Delete the redundant kernel:

Open a terminal and enter the command: dpkg-get-selections | grep Linux.

The image is the kernel file;

Delete the old kernel file:

Sudo apt-get deletes the kernel file name (for example, linux-image-2.6.27-2-generic).

The kernel is deleted and space is released. It should be possible to release 130- 140m.

Finally, look at the current kernel: uname -a A.

5. Clear all logs in the directory:

Because I'm in ls. Log * `

do

cat/dev/null & gt； $i

finished