#获取已安装模块列表
help("modules")
#获取模块说明及帮助信息
help("zlib")
#获取模块方法清单
dir("zlib")
Author Archives: neohope
二进制数字中1的个数
#include "stdafx.h"
#include <nmmintrin.h>
/*
*通过移位计算1的个数
*每一位都要判断和处理
*/
int BitCount(unsigned int n)
{
unsigned int c = 0;
while (n >0)
{
if ((n & 1) == 1)++c;
n >>= 1;
}
return c;
}
/*
*通过减法及位运算，保证每次至少消除一个1
*只处理1的位，0的位不处理
*/
int BitCountWithMinus(unsigned int n)
{
unsigned int c = 0;
for (c = 0; n; ++c)
{
n &= (n - 1);
}
return c;
}
/*
*将32位数字，截为4个8位数
*通过查表，得到每个8位数中1的个数，然后求和
*/
int BitCountLUT8(unsigned int n)
{
unsigned char BitsSetTable256[256] = { 0 };
for (int i = 0; i <256; i++)
{
BitsSetTable256[i] = (i & 1) + BitsSetTable256[i / 2];
}
unsigned int c = 0;
unsigned char* p = (unsigned char*)&n;
c = BitsSetTable256[p[0]] +
BitsSetTable256[p[1]] +
BitsSetTable256[p[2]] +
BitsSetTable256[p[3]];
return c;
}
/*
*将32位数字，截为4个8位数
*通过查表，得到每个8位数中1的个数，然后求和
*LUT表已经计算好
*/
int BitCountLUT8Static(unsigned int n)
{
unsigned int table[256] =
{
0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8,
};
return table[n & 0xff] +
table[(n >> 8) & 0xff] +
table[(n >> 16) & 0xff] +
table[(n >> 24) & 0xff];
}
/*
*将32位数字，截为8个4位数
*通过查表，得到每个4位数中1的个数，然后求和
*LUT表已经计算好
*/
int BitCountLUT4Static(unsigned int n)
{
unsigned int table[16] =
{
0, 1, 1, 2,
1, 2, 2, 3,
1, 2, 2, 3,
2, 3, 3, 4
};
unsigned int count = 0;
while (n)
{
count += table[n & 0xf];
n >>= 4;
}
return count;
}
/*
*将32位数字，相邻的2位求和，然后相邻的4位求和
*然后相邻的8位、16位、32位求和
*/
int BitCountParallel(unsigned int n)
{
n = (n & 0x55555555) + ((n >> 1) & 0x55555555);
n = (n & 0x33333333) + ((n >> 2) & 0x33333333);
n = (n & 0x0f0f0f0f) + ((n >> 4) & 0x0f0f0f0f);
n = (n & 0x00ff00ff) + ((n >> 8) & 0x00ff00ff);
n = (n & 0x0000ffff) + ((n >> 16) & 0x0000ffff);
return n;
}
/*
*第一行，计算每三位的1的个数（其实11*3是33位，但最高一位可以假设为0，所以没问题）
*第二行，实际上是先计算了相邻6位中1的个数（不会产生进位，结果最多占到3位），并将前三位置为0
*然后通过取模，相当于将每6位数字做了加法
*/
int BitCountMagic(unsigned int n)
{
unsigned int tmp = n - ((n >> 1) & 033333333333) - ((n >> 2) & 011111111111);
return ((tmp + (tmp >> 3)) & 030707070707) % 63;
}
unsigned int n = 127;
unsigned int bitCount = _mm_popcnt_u32(n);
/*
*将8位数字，转换为MY_UNSIGHED_CHAR结构体，然后求和
*/
struct MY_UNSIGHED_CHAR
{
unsigned a : 1;
unsigned b : 1;
unsigned c : 1;
unsigned d : 1;
unsigned e : 1;
unsigned f : 1;
unsigned g : 1;
unsigned h : 1;
};
long BitCountStuct(unsigned char b)
{
struct MY_UNSIGHED_CHAR *by = (struct MY_UNSIGHED_CHAR*)&b;
return (by->a + by->b + by->c + by->d + by->e + by->f + by->g + by->h);
}
int _tmain(int argc, _TCHAR* argv[])
{
printf("There are %d 1 in 133\n", BitCount(133));
printf("There are %d 1 in 133\n", BitCountWithMinus(133));
printf("There are %d 1 in 133\n", BitCountLUT8(133));
printf("There are %d 1 in 133\n", BitCountLUT8Static(133));
printf("There are %d 1 in 133\n", BitCountLUT4Static(133));
printf("There are %d 1 in 133\n", BitCountParallel(133));
printf("There are %d 1 in 133\n", BitCountMagic(133));
printf("There are %d 1 in 133\n", BitCountStuct(133));
return 0;
}
用位运算实现加减乘除
//加法
public static int add(int a, int b)
{
int ans;
while(b!=0)
{
ans = a^b;
b = ((a&b)<<1);
a = ans;
}
return a;
}
//减法
public static int sub(int a, int b)
{
return add(a, -b);
}
//正数乘法
private static int posMultiply(int a,int b)
{
int ans = 0;
while(b>0)
{
if((b&0x1)==1)ans = add(ans, a);
a = (a<<1);
b = (b>>1);
}
return ans;
}
//乘法
public static int multiply(int a,int b)
{
if(a==0||b==0)return 0;
if(a>0 && b>0)
return posMultiply(a, b);
if(a<0)
{
if(b<0)
{
return posMultiply(-a, -b);
}
else
{
return -posMultiply(-a, b );
}
}
else
{
return -posMultiply(a, -b);
}
}
//正数除法
private static int posDiv(int x,int y)
{
int ans=0;
for(int i=31;i>=0;i--)
{
if((x>>i)>=y)
{
ans+=(1<<i);
x-=(y<<i);
}
}
return ans;
}
//除法
public static int div( int a, int b )
{
assert(b!=0);
if(a==0)return 0;
if(a>0)
{
if(b>0)
{
return posDiv(a,b);
}
else
{
return -posDiv( a,-b);
}
}
else
{
if(b>0)
{
return -posDiv(a, b);
}
else
{
return -posDiv(-a, -b);
}
}
}
//求负数
public static int negtive(int a)
{
return add(~a, 1);
}
//比较正数大小
private static boolean isbigerPos( int a, int b )
{
int c = 1;
b = (a^b);
if(b==0)return false;
while(b>0)
{
b>>=1;
c <<= 1;
}
return (c&a)==0;
}
//比较大小
public static boolean isbiger( int a, int b )
{
if(a<0)
{
if(b<0)
{
return isbigerPos( negtive(b), negtive(a) );
}
else
{
return false;
}
}
else
{
if(b<0)
{
return true;
}
else
{
return isbigerPos(a, b);
}
}
}
public static int divideby3(int x)
{
int sum = 0;
while(x > 3)
{
sum = add(x>>2 , sum);
x = add(x>>2 , x&3);
}
if(x == 3)
{
sum = add(sum , 1);
}
return sum;
}
public static void main(String[] args)
{
System.out.println(add(13,19));
System.out.println(sub(13,19));
System.out.println(multiply(13,19));
System.out.println(div(10,5));
System.out.println(negtive(13));
System.out.println(isbiger(10,5));
System.out.println(isbiger(10,11));
System.out.println(divideby3(15));
System.out.println(divideby3(14));
System.out.println(divideby3(13));
System.out.println(divideby3(12));
System.out.println(divideby3(11));
}
几种常见求解平方根的方法
//精度
private final static double accuracy= 1e-6;
/**
* 暴力求解
*/
public static double bruteSqrt(double x)
{
assert(x>=0);
double ans=0.0;
while (Math.abs(x - ans * ans) > accuracy)ans += accuracy;
return ans;
}
/**
* 牛顿法求解
*/
public static double newtonSqrt(double x)
{
assert(x>=0);
double avg = x;
double last_avg = Double.MAX_VALUE;
while (Math.abs(avg - last_avg) > accuracy)
{
last_avg = avg;
avg = (avg + x / avg) / 2;
}
return avg;
}
/**
* 二分法求解
*/
public static double binarySqrt(double x)
{
assert(x>=0);
double low = 0;
double high = x;
double mid = Double.MAX_VALUE;
double last_mid = Double.MIN_VALUE;
while (Math.abs(mid - last_mid) > accuracy)
{
last_mid = mid;
mid = (low + high)/2;
if (mid*mid>x)high = mid;
if (mid*mid<x)low = mid;
}
return mid;
}
private final static int[] LUT =
{ 0, 16, 22, 27, 32, 35, 39, 42, 45, 48, 50, 53, 55, 57, 59, 61, 64, 65, 67, 69, 71, 73, 75, 76, 78, 80, 81, 83, 84,
86, 87, 89, 90, 91, 93, 94, 96, 97, 98, 99, 101, 102, 103, 104, 106, 107, 108, 109, 110, 112, 113, 114, 115,
116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 128, 129, 130, 131, 132, 133, 134, 135, 136,
137, 138, 139, 140, 141, 142, 143, 144, 144, 145, 146, 147, 148, 149, 150, 150, 151, 152, 153, 154, 155,
155, 156, 157, 158, 159, 160, 160, 161, 162, 163, 163, 164, 165, 166, 167, 167, 168, 169, 170, 170, 171,
172, 173, 173, 174, 175, 176, 176, 177, 178, 178, 179, 180, 181, 181, 182, 183, 183, 184, 185, 185, 186,
187, 187, 188, 189, 189, 190, 191, 192, 192, 193, 193, 194, 195, 195, 196, 197, 197, 198, 199, 199, 200,
201, 201, 202, 203, 203, 204, 204, 205, 206, 206, 207, 208, 208, 209, 209, 210, 211, 211, 212, 212, 213,
214, 214, 215, 215, 216, 217, 217, 218, 218, 219, 219, 220, 221, 221, 222, 222, 223, 224, 224, 225, 225,
226, 226, 227, 227, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233, 234, 234, 235, 235, 236, 236, 237,
237, 238, 238, 239, 240, 240, 241, 241, 242, 242, 243, 243, 244, 244, 245, 245, 246, 246, 247, 247, 248,
248, 249, 249, 250, 250, 251, 251, 252, 252, 253, 253, 254, 254, 255 };
/**
* 查表法求解
*/
public static int intLutSqrt(int x)
{
int xn;
if (x >= 0x10000)
{
if (x >= 0x1000000)
{
if (x >= 0x10000000)
{
if (x >= 0x40000000)
{
xn = LUT[x >> 24] << 8;
}
else
{
xn = LUT[x >> 22] << 7;
}
}
else
{
if (x >= 0x4000000)
{
xn = LUT[x >> 20] << 6;
}
else
{
xn = LUT[x >> 18] << 5;
}
}
xn = (xn + 1 + (x / xn)) >> 1;
xn = (xn + 1 + (x / xn)) >> 1;
return ((xn * xn) > x) ? --xn : xn;
}
else
{
if (x >= 0x100000)
{
if (x >= 0x400000)
{
xn = LUT[x >> 16] << 4;
}
else
{
xn = LUT[x >> 14] << 3;
}
}
else
{
if (x >= 0x40000)
{
xn = LUT[x >> 12] << 2;
}
else
{
xn = LUT[x >> 10] << 1;
}
}
xn = (xn + 1 + (x / xn)) >> 1;
return ((xn * xn) > x) ? --xn : xn;
}
}
else
{
if (x >= 0x100)
{
if (x >= 0x1000)
{
if (x >= 0x4000)
{
xn = (LUT[x >> 8]) + 1;
}
else
{
xn = (LUT[x >> 6] >> 1) + 1;
}
}
else
{
if (x >= 0x400)
{
xn = (LUT[x >> 4] >> 2) + 1;
}
else
{
xn = (LUT[x >> 2] >> 3) + 1;
}
}
return ((xn * xn) > x) ? --xn : xn;
}
else
{
if (x >= 0)
{
return LUT[x] >> 4;
}
}
}
return -1;
}
/**
* Quake III中快速求解平方根倒数的方法
*/
public static float fastInvSqrt(float x)
{
float xhalf = 0.5f*x;
int f2i = Float.floatToRawIntBits(x);
f2i = 0x5f375a86-(f2i>>1);
x = Float.intBitsToFloat(f2i);
x = x*(1.5f-xhalf*x*x);
x = x*(1.5f-xhalf*x*x);
return x;
}
/**
* Quake III中快速求解平方根方法
*/
public static float fastSqrt(float x) {
float y=x;
float xhalf = 0.5f*x;
int f2i = Float.floatToRawIntBits(x);
f2i = 0x5f3759df-(f2i>>1);
x = Float.intBitsToFloat(f2i);
x = x * (1.5f-(xhalf*x*x));
x = x * (1.5f-(xhalf*x*x));
return y*x;
}
public static void main(String[] args)
{
System.out.println(bruteSqrt(3));
System.out.println(newtonSqrt(3));
System.out.println(binarySqrt(3));
System.out.println(intLutSqrt(64));
System.out.println(1/fastInvSqrt(3));
System.out.println(fastSqrt(3));
}
修复GPT分区表
说起gpt来，就一把鼻涕一把泪的，因为工作原因，需要在windows进行开发，
没办法在mac book pro里安了个win7，后来为了方便，在mac下安了ntfs的读写驱动，
悲剧发生了，某天开机进入mac，很久没反应，强制重启后，windows分区已经挂掉了。
于是重装，用win7的光盘进行的分区，后来用第三方分区工具调整了下，ntfs不负众望，又挂了
好吧～～，又重装了一次
一波三折，终于稳定了。
但mac下，却认不到ntfs分区，一直认为是mac下ntfs驱动的问题，尝试过一些解决方案，都不行。
今天发现，mac下分区大小和win7下分区大小不一样，mac下的分区大小，仍是我在win7下调整前的状态
懂了，明显是gpt分区表错了啊。
网上找了一堆工具，还差点用gpt把hybrid MBR给覆盖了，晕。
最后，用gdisk终于搞定了，修改gpt的神器啊。
http://sourceforge.net/projects/gptfdisk/files/gptfdisk/0.8.5/
http://www.rodsbooks.com/gdisk/walkthrough.html
sudo进入gdisk后，选用/dev/disk0，然后用v命令进行校验，
gdisk发警告，mbr里有两个分区在gpt中不存在，
进入expert模式，用p和o命令打印gpt和mbr分区信息，发现真的对不上，
把分区表记录好，gpt备份好。
然后将gpt中错误的两个分区删掉，再根据mbr里的数据，重新建立两个分区，
再用v命令校验，没有问题，
保持修改，重启，终于搞定了。
注意：
我的情况是，在mac分区表错误，而win7下分区表正确，这说明是gpt错了，而hybrid MBR是对的。
而如果是相反的情况，就要根据gpt重新编辑mbr，这样的工具很多，貌似在mac，win，linux共存的时候发生的几率会比较高。
对硬盘分区表的修改，是很危险的工作，一定要备份数据，备份分区表，将风险尽量降低。
winxpx86+cygwin+vs2008编译32位openjdk7
除了win7x64+cygwin+vs2010编译64位openjdk6中的问题外，还会遇下面问题：
1、配套的WindowsSDK为6.0
2、编译器版本校验会出错，要调整Makefile
3、缺少头文件：stdint.h
主要是因为VS2008不符合c99规范
stdint.h
win7x64+cygwin+vs2010编译64位openjdk7
建议：
1、这是一个比较折腾的过程，可能的话建议用linux
2、建议用英文系统
3、建议用英文版的vc++
4、请不要用带空格的路径，尤其是不要用带中文的路径，
主要问题有：
1、可执行文件版本不兼容
2、win和linux路径问题
3、字符集问题，鄙视一下corba的注释，根本没考虑其他字符
4、cl的MT和MD要统一
5、不同路径下文件名冲突问题，
准备与编译：
1、安装VS2010、windows sdk7.1、VS2010 sp1，注意sp1和windows sdk的安装顺序
也有说只有VS的Express版本才需要安装windows sdk的，我反正都安装了。
2、安装directx sdk9（Summer 2004）
3、安装cygwin，并按照要求，下载相应组件，
http://www.cygwin.com/
http://hg.openjdk.java.net/jdk7/jdk7/raw-file/tip/README-builds.html
其中make组件太新，需要替换为3.8.1以前的版本
http://www.cmake.org/files/cygwin/make.exe-cygwin1.7
4、下载JDK6u22+，并安装
5、下载ant，并解压
6、下载并编译FreeType2.4
http://sourceforge.net/projects/freetype/files/
x64+MD+Release
7、下载OpenJDK7，并解压
8、新建drops文件夹，下载下面三个文件，并放到dorps文件夹中：
jaxp145_01.zip
jdk7-jaf-2010_08_19.zip
jdk7-jaxws2_2_4-b03-2011_05_27.zip
理论上，ant应该可以自动下载这三个文件，但我这里下不到
手工下载的话，在Makefile里找下面三个关键字就好了：
jaxp_src.bundle.name
jaxws_src.bundle.name
jaf_src.bundle.name
9、准备编译，新建run.bat，按自己的路径进行修改：
rem 这里是为了解决路径冲突问题 @set PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem; rem 注意，这里我的VS和WindowsSDK有冲突，导致VS100COMNTOOLS路径错误 @call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x64 @set VS100COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Tools rem ANT配置 @set ANT_HOME=D:/JavaTools/apache-ant-1.8.1 @set PATH=%PATH%;%ANT_HOME%\bin; rem FreeType配置 @set FREETYPE_HOME=D:/GnuWin/freetype2.4.10 @set PATH=%PATH%;%FREETYPE_HOME%/bin; @set ALT_FREETYPE_LIB_PATH=%FREETYPE_HOME%/lib64 @set ALT_FREETYPE_HEADERS_PATH=%FREETYPE_HOME%/include rem Cygwin设置 @set PATH=%PATH%;D:\Cygwin\bin; rem 这里是OpenJDK的设置啦 @set ALT_BOOTDIR=D:/JavaJDK/jdk1.6.0_34 @set ARCH_DATA_MODEL=64 @set ARCH=amd64 @set PLATFORM=windows @set ALT_DROPS_DIR=D:/DiskF/OpenJDK/openjdk7_VS2010_x64/drops rem 这两个变量要置空 @set JAVA_HOME= @set CLASSPATH= rem 个人爱好 @color 02 @title OpenJDK+VS2010 @cmd
10、运行run.bat
#测试配置： make sanity #没有错误的话： make
我遇到的问题：
1、主要死到了MT和MD上，这个我修改了Makefile，一定要和FreeType保持一致
2、还有FreeType.dll，我编译的是个大Lib，所以Makefile里拷贝dll的语句要去掉
3、corba的字符集问题，要把Makefile里的ascii去掉，因为生成的注释有中文，显然要出错
4、EXE冲突，我的工具版本很多，估计一般人没这么多问题，最后改了PATH，Find改了名称
比如win的find和cygwin的find，Oracle的zip和cygwin的zip
同样，cygwin和（mingw、GnuSetup、GnuWin）的冲突，也要注意
5、还有一个，就是bat中的路径，除Path外尽量用/，因为linux下，\是转义用的
6、尝试了MinGW，发现不够给力啊
Mac重启Finder,Dock,Menubar
Finder:
killall -KILL Finder
Dock:
killall -KILL Dock
Menubar
killall -KILL SystemUIServer
Linux显示配置xorg.conf文件
1、生成xorg.conf文件
#如果有必要，停止gdm3 service gdm3 stop #生成空白文件 Xorg -configure #移动文件 mv ~/xorg.conf.new /etc/X11/xorg.conf #修改文件，增加需要的分辨率 #如果有必要，开启gdm3 service gdm3 start
2、xorg.conf.new文件
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection
Section "Module"
Load "record"
Load "glx"
Load "extmod"
Load "dbe"
Load "dri"
Load "dri2"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
Identifier "Card0"
Driver "vboxvideo"
VendorName "InnoTek Systemberatung GmbH"
BoardName "VirtualBox Graphics Adapter"
BusID "PCI:0:2:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
3、新版xorg.conf文件
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection
Section "Module"
Load "record"
Load "glx"
Load "extmod"
Load "dbe"
Load "dri"
Load "dri2"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
Identifier "Card0"
Driver "vboxvideo"
VendorName "InnoTek Systemberatung GmbH"
BoardName "VirtualBox Graphics Adapter"
BusID "PCI:0:2:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
Modes "1280x800" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
Modes "1280x800" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
Modes "1280x800" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
Modes "1280x800" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1280x800" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x800" "1024x768" "800x600"
EndSubSection
EndSection
Debian6 Squeeze修改Terminal分辨率
试了不少方法，要么参数不支持，要不设置了没有用。
好吧，简单暴力一些。
编辑/boot/grub/grub.cfg，在启动参数前，增加两行：
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64' --class debian --class gnu-linux --class gnu --class os {
#第一行>>>>>>set gfxpayload=1024x768x24
#第二行>>>>>>load_video
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set a600ccdc-3768-464b-9b19-29ec051f93e5
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /boot/vmlinuz-2.6.32-5-amd64 root=UUID=a600ccdc-3768-464b-9b19-29ec051f93e5 ro quiet text
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
set gfxpayload=1024x768
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set a600ccdc-3768-464b-9b19-29ec051f93e5
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /boot/vmlinuz-2.6.32-5-amd64 root=UUID=a600ccdc-3768-464b-9b19-29ec051f93e5 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-5-amd64
}
### END /etc/grub.d/10_linux ###
修改后为：
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64' --class debian --class gnu-linux --class gnu --class os {
set gfxpayload=1024x768x24
load_video
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set a600ccdc-3768-464b-9b19-29ec051f93e5
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /boot/vmlinuz-2.6.32-5-amd64 root=UUID=a600ccdc-3768-464b-9b19-29ec051f93e5 ro quiet text
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
set gfxpayload=1024x768
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set a600ccdc-3768-464b-9b19-29ec051f93e5
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /boot/vmlinuz-2.6.32-5-amd64 root=UUID=a600ccdc-3768-464b-9b19-29ec051f93e5 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-5-amd64
}
### END /etc/grub.d/10_linux ###