seti@home还是有linux版的
只是奇怪怎么那么麻烦
先setiathome -graphics &
然后xsetiathome
6月1日,想明白了,很多人或很多机器
没有XWindow,或不在X下干活
SETI是希望他们也能帮上忙
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一个新西兰哥们用罩笠Chinese cookware scoops
可以收到5KM的Wifi信号
花了5$
————————-
一个罩笠有那么贵吗?
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A Beast of a Different Nature
The Kernel does not have access to the C library.
The kernel is coded in GNU C
The kernel lacks memory protection like user-space
The kernel cannot easily use floating point
The kernel has a small fixed-size stack
Because the kernel has asynchronous interrupts, is preemptive, and supports SMP, synchronization and concurrency are concerns within the kernel.
Portability is important.
阅读全文…
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Linux Versus Classic Unix Kernels
Linux supports the dynamic loading of kernel module. Although the linux kernel is monolithic, it is capable of dynamically loading and unloading kernel code on demand.
Linux has symmetrical multiprocessor ( SMP ) support. Although many commercial variants of Unix now support SMP, most traditional Unix implementations did not.
The Linux kernel is preemptive. Unlike traditional Unix variants, the Linux kernel is capable of preempting a task if it is running in the kernel. Of the other commercial Unix implementations, Solaris and IRIX have preemptive kernels.
Linux takes an interesting approach to thread support: It does not differentiate between threads and normal processes. To the kernel, all processes are the same some just happen to share resources.
Linux ignores some common Unix features that are thought to be poorly implemented, such as STREAMS, or standards that are brain dead.
Linux is free in every sense of the word. The feature set Linux implements is the result of the freedom of Linux’s open development model. If a feature is without merit or poorly thought out, the Linux developers are under no obligation to implement it. To the contrary, Linux has adopted an elitist attitude toward changes: Modifications must solve a specific real-world problem, have a sane design, and have a clean implementation. Consequently, features of some other modern Unix variants, such as pageable kernel memory, have received no consideration. Despite and differences, Linux remains an operating system with a strong Unix heritage.
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apt-get error
若apt-setup出現”E:Dynamic MMap ran out of room”錯誤,在/etc/apt/apt.conf
加入
APT
{
Cache-Limit “141943904″
}
增加cache的可用空間。
google来的,来自台湾龍潭國小drbl學習日誌
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装了debian 3.0的第一张盘,只有基本系统
印象里安装过程没有问过我要不要设网卡IP什么的
启动之后发现只有lo
ifconfig -a后发现eth0设成了自动ip
只好自己改interfaces的内容再ifup什么的
问题:我现在家里用一台台式机ADSL上网,做Proxy Server
IP地址是192.168.0.1,DNS,GATEWAY都是它
笔记本固定IP地址设好后,能ping到192.168.0.1的机器
ping 不通外边的名字或地址
但是我用base-config,tasksel居然可以下载pkg!
我虽然可以下载了,但是另一个console仍然不能ping通外边
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linux下跟Unix格式不同
linux下是 *(rw,no_root_squash) 之类的
Unix下是 -rw ,具体各个版本间Unix有什么区别还不知道
另外export后remount成 rw 依然 有可能permission denied
那是本身export出去的目录还不能写
所以要想nfs export出去一个可写的目录,至少
几个地方都要写对
/etc/exports 要加 rw
mount -t nfs -o remount,rw …
本身目录也是有 w 的
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用MSBA查安全问题
发现很多patch真的叫patch了
嘿嘿
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俺们拿到一台双AMD Optron 64位CPU 1G PC733内存的机器
居然想不起来该用她干点啥
最后还是装了个SETI的client
没事找找外星仁吧。。。。。。
SETI居然没有Unix/Linux下的client
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