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RSS订阅原创 gcc optimize options
优化选项 (OPTIMIZATION OPTION)这些选项 控制 多种 优化措施:-O-O1优化. 对于 大函数, 优化编译 占用 稍微多 的 时间 和 相当大 的 内存.不使用 `-O' 选项 时, 编译器 的 目标 是 减少 编译 的 开销, 使 编译结果 能够 调试. 语句 是 独立的: 如果 在 两条语句 之间 用 断点 中止 程序, 你 可以 对 任何 变量
2014-03-28 09:47:39
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原创 自定义的delay()函数（C语言）
#include void my_delay(long int delay_t){clock_t start_time; //the start timestart_time=clock();while((clock()-start_time) }
2014-03-27 13:34:29
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原创 Linux文件的优先级
r=4, w=2, x=1Octal Binary File Mode0 000 ---1 001 --x2 010 -w-3 011 -wx4 100 r--5 101 r-x6 110 rw-7 111 rwx
2014-03-27 13:09:32
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原创 不需要密码就登陆SSH Server
Your aimYou want to use Linux and OpenSSH to automize your tasks. Therefore you need an automatic login from host A / user a to Host B / user b. You don't want to enter any passwords, because you
2014-03-27 13:07:34
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原创 git下载和上传的用法
Usegit clone ssh://username@url.com/~username/workfolder/ mylocalrepoWhich will create the repository on your local machine. Any commits you make to that branch are to your local repository, a
2014-03-27 13:00:45
512
原创 Linux Remote Desktop For Controlling Windows XP / Vista / Server 2003 ( rdesktop )
Install rdesktop# apt-get install rdesktopConnect to MS Windows 2000/2003 server from Linux, type the following command at a shell prompt (connect to Windows server called mw2sn100.mycorp.com)
2014-03-27 12:58:41
790
原创 vsftpd as ftp server
You can edit the vsftpd configuration file,/etc/vsftpd.conf, to change the default settings.0）sudo apt-get install vsftpdIn this example, anonymous FTP is not desired, but a group of trusted
2014-03-27 12:57:36
679
原创 gdb：怎样做内存查找？
x /16xb 0x8ae64de16=length of memoryx = format, like printf(format)b = binarythe result is as0x47 0x00 0x11 0x17 0x1d 0x01 0xbb 0x01
2014-03-27 12:54:49
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原创 vim：怎样查找？
1 search a word "word", use:/word, when found, use "n" or "N" or "3N" to go to next/previous one2 search a word "word" ignore the case, use:set ignorecase/wordto set back, use:set
2014-03-27 12:53:20
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原创 03/2010 Filezilla: Best ftp gui client for ubuntu
Filezilla is moved to ubuntu in about 2007 year.It's a gorgeous ftp gui client.
2014-03-27 12:48:34
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原创 GIT LOG:REVIEWING HISTORY
The git log command can show lists of commits. On its own, it shows all commits reachable from the parent commit; but you can also make more specific requests:$ git log v2.5.. # commits since (not
2014-03-27 12:47:06
602
原创 vim faq: how to view the hex text?
in vim, there's a xxd as an external program.vim foo:%!xxd
2014-03-27 12:44:26
506
原创 如何发现0200:1521就是igb.ko
我是通过bing.com来查到这些信息的，当时我lspci -k发现网卡驱动不起来，于是开始bing.com 0200:1521,这是网卡的pci id找到的位置如下，由此我知道这是i350网卡，对应的modules是igbhttp://openbenchmarking.org/linux/PCI/0200/8086:1521igb 0000:08:00.0:
2014-03-27 07:31:51
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原创 SourceMonitor的复杂度计算方法
圈复杂度下面科普性的内容来自：http://blog.youkuaiyun.com/lg707415323/article/details/7790660 圈复杂度(Cyclomatic Complexity)是一种代码复杂度的衡量标准。它可以用来衡量一个模块判定结构的复杂程度，数量上表现为独立现行路径条数，也可理解为覆盖所有的可能情况最少使用的测试用例数。圈复杂度大说明程序代码的判断逻辑复杂
2014-03-25 13:23:09
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原创 Use g++ to replace gcc when link the .cpp file
Use g++ to replace gcc when link the .cpp fileQ:I have a small program, test.c. It runs OK. This is on Linux (kernel2.6.8.1, GCC 3.4.1).I decided to convert it to C++ before expandin
2014-03-25 13:11:45
482
原创 Gcc IDE for windows, recommand DEVCPP
light weighted a compiler for small compile or different language identification
2014-03-25 13:10:37
993
原创 grep: How to find a word inside a directory
grep: How to find a word inside a directorye.g.grep -l "ERROR:" *.logto recursively search in a directory is as,grep -r "LOG" *where -r means recursively, * means match any file
2014-03-25 13:09:36
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原创 gdb faq: how to set/cancel a break
gdb faq: how to set/cancel a breakin the command line,gdbthen it will enter gdb command linefile foobarrun foobarbreak foo.cpp:15 (which means to break at line 15 of foo.cpp)info
2014-03-25 13:07:17
574
原创 how to mount remote disk as local disk at startup
1 sudo vi /etc/fstabin this file, add the line as,//host_machine_name/d$ /mount smbfs user=foo,domain=bar,password=alice_password,iocharset=utf8 0 0notice that you should replace the corre
2014-03-25 13:05:28
651
原创 how to mount remote disk as local disk
sudo mount -t smbfs //xxx_host/d$ /mount -o user=foo_user,domain=bar_domain,iocharset=utf8you'd better replace //xxx_host with your host machine name, a.k.a doggy-host, 10.2.3.4,replace foo_us
2014-03-25 13:04:28
763
原创 how to edit grub2 menu in ubuntu
I means about grub2, not grub.sudo vi /etc/default/grubin that file /etc/default/grub, you can foundGRUB_TIMEOUT=10change this to the seconds you wantGRUB_TIMEOUT=3and then exe
2014-03-25 13:02:46
531
原创 How to let ubuntu auto login
in the command line, execute:sudo visudoadd in the end of the file:xxx ALL=NOPASSWD: ALLnotice to replace xxx with your user/group. a.k.atuxtoken ALL=NOPASSWD: ALL
2014-03-25 13:01:27
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原创 How to let ubuntu mount at startup?
1 sudo fdisk -l2 sudo vi /etc/fstabadd the following:/dev/sda4 /media/diskA ext4 defaults 0 0/dev/sda5 /media/diskB ntfs defaults 0 03 sudo mkdir /media/diskAsudo mkdir /media/
2014-03-25 12:59:52
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