2. Linux system composition

Kernel, shell, file system, application.

GNU Bourne-again SHell

User
|
|
Bash terminal is equivalent to Bash's interface and tools Cat/etc/shells
| Bash-4.1.2-9.el6_2.x86_64

|
Kernel kernel
1, System interface call www.kernel.org
| 2, Memory management
| 3, File System Management
| 4, Process Management
| 5, hardware-driven
|
Physical hardware

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②. Kernel version:
Version number of the kernel (operating system core)
may have: Uname-r view
2.6.32-71.el6.x86_64
Kernel version number: R.X.Y
R Major Version number
X-minor version number (odd for beta (development) even for stable version)
Y revision number


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2. Linux system composition