ox0spy's blog

Mar 28, 2009

Windows下使用linux coreutils

工作中要在Windows下，想用一些Linux下的常用工具时就比较郁闷了
cygwin太大了，而且我只用几个简单的命令，不想装...
还好，这有 GNU utilities for Win32

下载下来，设置下Windows的环境变量就好了

这样，id, pwd, uname, wc, grep, tee, cut, tail, sed, gawk等都可以使用了...

Mar 25, 2009

大家没事多上去玩玩，Chinaunix

2009-3-18，就公布获奖名单了
今天还是看wzt的博客上说他得了入围奖，想起我也做过一道题 O(∩_∩)O~
获得 ChinaUnix第一届“C语言代码”开发大赛优秀奖
早知积分给这么多，我就都做了...

8. 写一个程序，列出环境变量PATH中包含的所有目录的路径名。注意，Unix/Linux上PATH中各个路径名之间的分隔符与Windows上的不同。使用条件编译，使你的程序可以适用于这两种系统。


/*************************************************************************
 Author       : ox0spy
 Email        : ossteerer@gmail.com
 Blog         : ox0spy.blogspot.com
 Created Time : Tue 17 Feb 2009 08:49:09 AM CST
 File Name    : 8.c
 Description  :
 ************************************************************************/
#include <stdio.h>
#include <stdlib.h>

#define infilename "in.txt"
#define outfilename "out.txt"

/* 定义不同的分隔符 */
#ifdef _WIN32
#define SEPARATOR ";"
#else
#define SEPARATOR ":"
#endif


int main()
{
    char *path;        /* PATH环境变量 */
    char *token;
    FILE *outfile;    /* 保存结果 */
   
    if(NULL == (outfile = fopen(outfilename, "w")))
    {
        printf("open output file : %s error!\n", outfilename);
        return -1;
    }

    if(NULL != (path = getenv("PATH")))    /* 获取PATH变量的值 */
        fprintf(outfile, "PATH = %s\n\n\n", path);   
    token = strtok(path, SEPARATOR);
    while(NULL != token)
    {
        fprintf(outfile, "%s\n", token);
        token = strtok(NULL, SEPARATOR);
    }

    return 0;
}

奖品：1000积分 or 一本书

1000积分，但是100积分才1块钱，也就是才10元，拿着10元啥都干不了...
都在坛子混了4年了，积分才1k多，想想，还是再拿本书吧
于是乎，捡了本最贵的o(╯□╰)o 算法导论（原书第2版）
虽然舍长推荐的那本算法书还没看呢 o(︶︿︶)o唉

超级郁闷，算法导论没了，其他书没兴趣，只能拿1000分了

Mar 23, 2009

可以多睡会了....

不用在路上堵着了,自己控制速度，绕着二环路跑...

Mar 22, 2009

Firefox Vimperator

如果你是vim fans, 如果你想扔掉鼠标高效上网,不妨试试 Vimperator

如何使用 vimperator 更好的折腾 firefox 给出了很多有用链接

我整理的一些快捷键(那些英文的都来自linux.com,有时看着英文挺爽的,就没懒得翻译)

1. Google search
        t+要搜索的内容在新标签中打开Google搜索内容
        t+url                   在新标签中打开url
2. 书签
        M+字幕   定义快捷书签
        go+字幕转到已定义的快捷书签
        ctrl+D   存到美味书签
        ctrl+K   打开美味书签主页访问
3. 恢复以前的样子
        :set go+=mT             <=> :set guioptions=mT
        :mkv    保存设置
4.
        gt or ctrl-n    : 下一个标签
        gT or ctrl-p    : 前一个标签
        gh                              : 访问Home page
        gH                              : 在新标签中访问Home page
        gu                              : go up.比如,把你从www.test.com/test 带到www.test.com
        H                               : go to the previous page in your browser history.
        L                               : go to the next page in your browser history.
5. commands
    :o http://ox0spy.blogspot.com    : open ox0spy.blogspot.com
    :o search term                    : use the default search engine to search for a search term.
    :o filename                        : open a local file using firefox
    :q                                : close the current tab. if only one tab is open, exit firefox.
    :zi                                : zoom in. Increases text size by 25% on the page that has focus.
    :qI                                : zoom in by 100% on the page that has focus.
    :zo                                : zoom out.Decreases text size by 25% on the page that has focus.
    :zO                                : zoom out by 100% on the page that has focus.
    :zz                                : used alone zz will reset page to 100%. use witha a count, it will set the text size to any value between 25% and 500%. So, 105zz will set the text size to 105% of normal.
6. links
    打开链接:
        f 进入hints mode,所以链接都被高亮显示而且前面有标示,输入相应的标示键就可以到那个链接了.
    ??    ;; 进入ExtendedHint mode,和hints mode 类似,输入标示键,然后可用使用'y'复制url,'Y'复制url的描述文本.
7. history
    :history                : 默认显示10个历史浏览记录
    :history search term    : 搜索浏览历史
    ESC                        : 关闭显示
8. searching
    /search term
    ?search term            : like vim
9. quitting
    :qall or ZQ                : will exit firefox and clear the session history.
    ZZ                        : quit firefox, but restart it later with the same session.
    :restart                : restart firefox immediately.
10. refresh
    r                        : like <F5>, refresh page
11. copy && paste
    When I want to copy some text, I usually start by searching with '/' the
    beginning of it, then I press 'i' to go in CARET mode, 'v' to go in
    VISUAL mode. Then I can select my text. When I'm done, I type y to copy
    it, and I paste it wherever I want to.

Mar 21, 2009

搞定blogspot贴代码

现在代码可以高亮显示了...
1. pretty print
2. vim2html

#!/usr/bin/env python
print "Only test ..."

#include <stdio.h>
int main(void)
{
    printf("Only test ...");
    return 0;
}

不爽的是我一般通过email发布文章...

PS：把最新评论也添加上...

参考:
怎样给Blogger添加侧边栏评论和最新文章（续）
How to publish source code in Blogger.com

Mar 18, 2009

又开始工作了...

2009－03－17 又一次开始上班...

ox0spy@ox0spy-laptop:~$ date
Wed Mar 18 00:26:31 CST 2009

累啊，睡觉去...

上次笔试编程题

有一个文件，内容如下：
ox0spy@ox0spy-laptop:/code/c$ cat tt.txt
aa,female,21,54
abc,male,20,60
tt,male,22,58
ox0spy,male,23,80
mary,female,24,90
cc,female,22,88

每个字段代表的意思是：姓名，性别，年龄，成绩
请用c语言编写程序，打印成绩大于等于60分的同学的姓名和成绩.

ox0spy@ox0spy-laptop:/code/c$ cat parseCsv.c
/*************************************************************************
Author : ox0spy
Email : ossteerer@gmail.com
Blog : ox0spy.blogspot.com
Created Time : Tue 17 Mar 2009 11:35:04 PM CST
File Name : parseCsv.c
Description :
************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

int main()
{
char filename[20] = "tt.txt";
FILE *fp;
char name[20];
char sex[8];
int age;
int grade;

if((fp = fopen(filename, "r")) == NULL)
{
printf("open file : %s error\n%s\n", filename, strerror(errno));
exit(1);
}

while(fscanf(fp, "%[^,],%[^,],%[^,],%d\n", name, sex, &age, &grade)
!= EOF)
{
if(grade >= 60)
printf("%s\t%d\n", name, grade);
}

fclose(fp);

exit(0);
}

Mar 17, 2009

error: stdio.h: No such file or directory

写了一个简单的程序出现错误，提示：error: stdio.h: No such file or directory

把build-essential装上就好了...

ox0spy@ox0spy-laptop:/code/c$ sudo apt-get install build-essential

Mar 13, 2009

ubuntu 8.04 install mpd

$ sudo apt-get install mpd
出错：
ALSA lib pcm_dmix.c:874:(snd_pcm_dmix_open) unable to open slave
No protocol specified
E: client-conf-x11.c: XOpenDisplay() failed

解决：
$ sudo apt-get install paprefs
$ paprefs
* Enable network access to local sound devices
* Don't require authentication

在/etc/mpd.conf 中添加:
audio_output {
type "pulse"
name "My MPD Pulse output"
}

$ sudo /etc/init.d/mpd restart

$ sudo mpd --create-db

$ mpc listall | mpc add

$ mpc play

mpc 与 vim 结合，以便写代码时听歌
编辑.vimrc，添加mpc的热键
map mp :!mpc play<cr>
map mn :!mpc next<cr>
map ms :!mpc stop<cr>