骑士的生活

从老外的坛子上扒下来的，刚刚测过，24位的bmp可以转，其它的没测

 

The GD library doesn't support .BMP files for some reason. I've
written a function that converts .BMP files to .GD, a very simple
format that GD uses.

The following code implements imagecreatefrombmp(). It first convert
the BMP to GD, saving it to a temporary location, then open the image
using imagecreatefromgd().


<?php

function ConvertBMP2GD($src, $dest = false) {
 if(!($src_f = fopen($src, "rb"))) {
  return false;
 }
 if(!($dest_f = fopen($dest, "wb"))) {
  return false;
 }
 $header = unpack("vtype/Vsize/v2reserved/Voffset", fread($src_f, 14));
 $info = unpack("Vsize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vncolor/Vimportant", fread($src_f, 40));
 extract($info);
 extract($header);
 if($type != 0x4D42) { // signature "BM"
  return false;
 }

 $palette_size = $offset - 54;
 $ncolor = $palette_size / 4;
 $gd_header = "";
 // true-color vs. palette
 $gd_header .= ($palette_size == 0) ? "\xFF\xFE" : "\xFF\xFF";
 $gd_header .= pack("n2", $width, $height);
 $gd_header .= ($palette_size == 0) ? "\x01" : "\x00";
 if($palette_size) {
  $gd_header .= pack("n", $ncolor);
 }
 // no transparency
 $gd_header .= "\xFF\xFF\xFF\xFF";

 fwrite($dest_f, $gd_header);

 if($palette_size) {
  $palette = fread($src_f, $palette_size);
  $gd_palette = "";
  $j = 0;
  while($j < $palette_size) {
   $b = $palette{$j++};
   $g = $palette{$j++};
   $r = $palette{$j++};
   $a = $palette{$j++};
   $gd_palette .= "$r$g$b$a";
  }
  $gd_palette .= str_repeat("\x00\x00\x00\x00", 256 - $ncolor);
  fwrite($dest_f, $gd_palette);
 }

 $scan_line_size = (($bits * $width) + 7) >> 3;
 $scan_line_align = ($scan_line_size & 0x03) ? 4 - ($scan_line_size & 0x03) : 0;

 for($i = 0, $l = $height - 1; $i < $height; $i++, $l--) {
 // BMP stores scan lines starting from bottom
  fseek($src_f, $offset + (($scan_line_size + $scan_line_align) * $l));
  $scan_line = fread($src_f, $scan_line_size);
  if($bits == 24) {
   $gd_scan_line = "";
   $j = 0;
   while($j < $scan_line_size) {
    $b = $scan_line{$j++};
    $g = $scan_line{$j++};
    $r = $scan_line{$j++};
    $gd_scan_line .= "\x00$r$g$b";
   }
  }
  else if($bits == 8) {
   $gd_scan_line = $scan_line;
  }
  else if($bits == 4) {
   $gd_scan_line = "";
   $j = 0;
   while($j < $scan_line_size) {
    $byte = ord($scan_line{$j++});
    $p1 = chr($byte >> 4);
    $p2 = chr($byte & 0x0F);
    $gd_scan_line .= "$p1$p2";
   }
   $gd_scan_line = substr($gd_scan_line, 0, $width);
  }
  else if($bits == 1) {
   $gd_scan_line = "";
   $j = 0;
   while($j < $scan_line_size) {
    $byte = ord($scan_line{$j++});
    $p1 = chr((int) (($byte & 0x80) != 0));
    $p2 = chr((int) (($byte & 0x40) != 0));
    $p3 = chr((int) (($byte & 0x20) != 0));
    $p4 = chr((int) (($byte & 0x10) != 0));
    $p5 = chr((int) (($byte & 0x08) != 0));
    $p6 = chr((int) (($byte & 0x04) != 0));
    $p7 = chr((int) (($byte & 0x02) != 0));
    $p8 = chr((int) (($byte & 0x01) != 0));
    $gd_scan_line .= "$p1$p2$p3$p4$p5$p6$p7$p8";
   }
   $gd_scan_line = substr($gd_scan_line, 0, $width);
  }

  fwrite($dest_f, $gd_scan_line);
 }
 fclose($src_f);
 fclose($dest_f);
 return true;
}

function imagecreatefrombmp($filename) {
 $tmp_name = tempnam("tmp", "GD");
 if(ConvertBMP2GD($filename, $tmp_name)) {
  $img = imagecreatefromgd($tmp_name);
  unlink($tmp_name);
  return $img;
 }
 return false;
}

function mylog($msg)   // 偶加的
{
 $fp = fopen("mylog.txt", "a+");
 echo $msg."\n";
 fwrite($fp, $msg."\n");
 fclose($fp);
}

$img = imagecreatefrombmp("test24bit.bmp");
if($img)
{
 imagepng($img, "./test.png");  //原文是转成jpeg
}
?>

今天遇到个奇怪的问题
[prcti01:root/1053]#du -h --max-depth=0
du: `./proc/10290/task': No such file or directory
du: `./proc/10290/fd': No such file or directory
du: `./proc/10291/task': No such file or directory
du: `./proc/10291/fd': No such file or directory
du: `./proc/10292/task': No such file or directory
du: `./proc/10292/fd': No such file or directory
du: `./proc/10293/task': No such file or directory
du: `./proc/10293/fd': No such file or directory
du: `./proc/10294/task': No such file or directory
du: `./proc/10294/fd': No such file or directory
du: `./proc/10295/task': No such file or directory
du: `./proc/10295/fd': No such file or directory
13G     .
[prcti01:root/1054]#df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             142G  124G   11G  93% /
/dev/sda1              99M   13M   81M  14% /boot
none                  249M     0  249M   0% /dev/shm

 

以上可以看到du统计出来文件只占了13G, 但是df却统计出磁盘使用了124G,

怀疑有坏块或文件节点损坏也有用fsck -y修复了一下之后df的统计结果恢复正常了.

 

由此猜想du是按文件进行统计的, df是按磁盘节点进行统计的(包含坏的节点), 因此才会出现一开始统计信息矛盾的现象

 

目的：计算apache访问日志里，同一天每个IP的访问次数
相关命令: cat 、grep、sed、sort、uniq
运行系统: CentOS 4.4 我想linux系列都应该可以，但是freebsd和unix下需要对个别命令的option做一下修改
例子：
以下命令为统计2008年度的访问情况：
cat  access_log  | grep "/2008:" |sed -ur 's/([\S]*) .*\[(.*\/.*)\/.*:*\].*/\1:\2/' | sort -t: -k1 | uniq -c | sort -t: -k2
访问次数 IP:日期
         1 208.80.193.32:11/Jan
         1 211.1.219.173:11/Jan
    1324 202.94.148.161:11/Jan
     134 210.83.201.17:11/Jan
        2 116.80.158.100:11/Jan
      54 210.83.214.164:11/Jan
      55 210.83.223.115:11/Jan
     634 210.83.214.163:11/Jan

祝各位使用愉快

是交叉线幸福一些还是相邻的平行线幸福一些呢？

本来不想写什么的，最近实在是累的要命，连续一个多月的加班，今天更是一直到早上六点才睡，九点又要爬起来去公司。脑子里一天都晕乎乎的，刚看了蜡笔老刘的日志，深有感触，觉得应该写点什么记下此时的心情。

 

与他接触时间不长，但却让我深感佩服，无论是技术还是理论以及知识面，老刘都让我感到望尘莫及，这样的一个人不但没有丝毫的傲气，甚至连一点儿让你觉得不舒服的感觉都没有，完全就象是邻居家的大哥，人一辈子能遇到几个这样的人就会觉得人生其实很不错。

 

老刘的日志里写到“是男人就要挺住！”这句话让我觉的心里一酸，这个社会赋予男人太多的责任和义务了，有时候甚至让人有种无力为继的感觉，女人累了尚且可以找个男人依靠，但是男人累了除了“挺住”还能做什么呢。我们有太多的无奈太多的不满太多的委屈，可我们无人倾述或是说不能倾述，我们只能紧咬着牙关告诉自己“站直了，别趴下！”。

 

像老刘这种男人轻易不会喊累的，如果哪一天说“有点累了！”，那么其间的辛苦就远非一般人可以承受的住的了。

 

唉～祝老刘身体健康万事顺意吧。

 

股市牛气冲天，偶也赶把潮流，到股海沉浮一回

 

上周五7块7毛4买进的重庆钢铁200股 今天收盘是8块1毛3赚了77块4毛6, 长得有点慢，而且风险有些大了，想在8块3左右卖掉它。

早上9块5毛8买进300股金马股份  收盘时是10块4毛3,涨停, 赚了253块4毛钱 （我看好你哦，明天给我继续涨停)

 

600260 600340 600475看指标样子不错，吃进的话，估计还能小赚一笔，

 

股市全面泛红，估计今年会有个好收成。

YUM是个不错的包管理器，以后不用辛苦的一个个rpm了

以下是偶安装配置的过程，弟兄们酌情参考修改:

ＯＳ：　Red Hat Enterprise Linux WS release 4

安装yum:
   下载: wget http://linux.duke.edu/projects/yum/download/2.0/yum-2.0.7-1.noarch.rpm
   安装: rpm -i yum-2.0.7-1.noarch.rpm

修改/etc/yum.conf
/etc/yum.conf内容
 [main]
 cachedir=/var/cache/yum
 debuglevel=2
 logfile=/var/log/yum.log
 pkgpolicy=newest
 distroverpkg=centos-release
 tolerant=1
 exactarch=1
 retries=20
 obsoletes=1
 gpgcheck=1

 [base]
 name=CentOS-4 - Base
 baseurl=http://mirror.centos.org/centos/4/os/i386/ 目录自己到上面去看一下，哪个版本适合自己
 gpgcheck=1
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

 #released updates
 [update]
 name=CentOS-4 - Updates
 baseurl=http://mirror.centos.org/centos/4/updates/i386/
 gpgcheck=1
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

 #packages used/produced in the build but not released
 [addons]
 name=CentOS-4 - Addons
 baseurl=http://mirror.centos.org/centos/4/addons/i386/
 gpgcheck=1
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

 #additional packages that may be useful
 [extras]
 name=CentOS-4 - Extras
 baseurl=http://mirror.centos.org/centos/4/extras/i386/
 gpgcheck=1
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

 #additional packages that extend functionality of existing packages
 [centosplus]
 name=CentOS-4 - Plus
 baseurl=http://mirror.centos.org/centos/4/centosplus/i386/
 gpgcheck=1
 enabled=0
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

 #contrib - packages by Centos Users
 [contrib]
 name=CentOS-4 - Contrib
 baseurl=http://mirror.centos.org/centos/4/contrib/i386/
 gpgcheck=1
 enabled=0
 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

导入公钥：
　　　　rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-centos4

使用实例
1、搜索一个包
[root@localhost etc]# yum search subversion
 (略)
 Finding updated packages
 Downloading needed headers
 Looking in available packages for a providing package
 Available package: subversion-devel.i386 0:1.1.4-2.ent from base matches with
  Development package for Subversion developers.
 Available package: subversion-devel.i386 0:1.1.4-2.ent from base matches with
  subversion-devel
 Available package: subversion-perl.i386 0:1.1.4-2.ent from base matches with
  This package includes the Perl bindings to the Subversion libraries.
 Available package: subversion-perl.i386 0:1.1.4-2.ent from base matches with
  Perl bindings to the Subversion libraries
 Available package: subversion-perl.i386 0:1.1.4-2.ent from base matches with
  subversion-perl
 Available package: mod_dav_svn.i386 0:1.1.4-2.ent from base matches with
  Apache server module for Subversion server.
 6 results returned
 Looking in installed packages for a providing package
 Installed package: subversion.i386 0:1.1.4-2.ent matches with  -->我已经安过了所以出现在这里，呵呵
  subversion
 1 results returned
2、安装一个包
[root@localhost etc]# yum search subversion-perl.i386 0:1.1.4-2.ent

PS:
[root@asterisk1 etc]# yum -h
usage: yum [options] < update | install | info | remove | list |
    clean | provides | search | check-update | groupinstall |
    groupupdate | grouplist | groupinfo | groupremove |
    makecache | localinstall | erase | upgrade | whatprovides |
    localupdate | resolvedep | shell | deplist >

options:
  -h, --help            show this help message and exit
  -t, --tolerant        be tolerant of errors
  -C                    run entirely from cache, don't update cache
  -c [config file]      config file location
  -R [minutes]          maximum command wait time
  -d [debug level]      debugging output level
  -e [error level]      error output level
  -y                    answer yes for all questions
  --version             show Yum version and exit
  --installroot=[path]  set install root
  --enablerepo=[repo]   enable one or more repositories (wildcards allowed)
  --disablerepo=[repo]  disable one or more repositories (wildcards allowed)
  --exclude=[package]   exclude package(s) by name or glob
  --obsoletes           enable obsoletes processing during updates
  --noplugins           disable Yum plugins