Linux Versions and Patches
Linux version
[1] 2.6.10
2.6 version number, 10 release number
[2] 2.6.10 and 2.6.11
They can differ significantly even in core components and in fundamental algorithms
[3] 2.6.11.12
when a new kernel release appears, it is potentially unstable and buggy. To address this problem, the kernel developers may release patched versions of any kernel, which are identified by a fourth number in the version numbering scheme
Which patch to apply which Release?
[1] Stable kernel patches apply to the base kernel version.
patch-2.6.17.10 --> linux-2.6.17 = linux-2.6.17.10
patch-2.6.17.10 -/-> linux-2.6.17.9
[2] base kernel release patches only apply to the previous base kernel version.
patch-2.6.18 --> linux-2.6.17 = linux-2.6.18
patch-2.6.18 -/-> linux-2.6.17.2
[3] incremental patches upgrade from a specific release to the next release
patch-2.6.17.10-11 --> linux-2.6.17.10 = linux-2.6.17.11
An example
How to go from the 2.6.17.9 kernel release, to the 2.6.17.11 release?
Finding the incremental patches http://www.kernel.org/pub/linux/kernel/v2.6/incr/
patch-2.6.17.9-10 --> linux-2.6.17.9 = linux-2.6.17.10
patch-2.6.17.10-11 --> linux-2.6.17.10 = linux-2.6.17.11
相关文档：
Linux内核配置办法：
1. make config
这种办法会遍历所有配置项，要求用户逐个选择Y/N/M
2. make menuconfig
这个办法是基于ncurse库编制的图形界面工具。常用
3. make xconfig
用于基于X11的图形工具
4. make gconfig
用于基于gtk+图形工具
5. make defconfig
创建一个默认的配置，生成当前的.config
6. make x ......
/*
* linux/fs/char_dev.c
*
* (C) 1991 Linus Torvalds
*/
#include <errno.h>
#include <sys/types.h> // 定义了基本的系统数据类型
#include <linux/sched.h>
#include <linux/kernel.h> // 含有一些内核常用函数的原形定义
#include < ......
1. linux下启动oracle
su - oracle
sqlplus /nolog
conn /as sysdba
startup
exit
lsnrctl start
exit
2. linux下关闭oracle
su - oracle
sqlplus /nolog
conn /as sysdba
shutdown immediate
exit
lsnrctl stop
exit
可以使用lsnrctl 进去后用status查看状态，类似：
lsnrctl
status
http://hi.baidu.c ......
在linux上，jprofiler可以分析java的软件系统，oprofile可以分析C的软件系统。
oprofile可以说是一个工具集，包含：
ophelp，
opcontrol，
agent libraries，
opreport，
opannotate，
opgprof，
oparchive，
opimport。
� ......
Linux下配置静态IP地址，设置DNS和主机名
配置文件位于：
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.3
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
使IP地址生效：
/sbin/ifdown eth0
/sbin/ifup eth0
配置dns解析
echo "nameserver 211.98.1.28" ......
