8-17 Android Memory cleanup

System garbage, is the system no longer need to file the collectively
When you browse the webpage, install and uninstall the program residue files and registry key values
These are files that have no effect on the system and can only add die hard to the system, so it's called garbage.

Memory management
1.WIndows operating system memory management is: how much to open, how much, close the principle of recovery;
2.Linux operating system memory management is: Try to use memory, memory is not enough to automatically release the infrequently used or long time did not open background program;

Remove Total Memory (memtotal):

1. Read the file

2. Manipulation of strings

8-17 Android Memory cleanup