Linuxer, 现从事固件开发

（以DejaVu Sans Mono为例）下载DejaVuSansMono.ttf，保存在～/Downloads下$ mkdir /usr/share/fonts/monospace$ cd /usr/share/fonts/monospace$ cp ~/Downloads/DejaVuSansMono .$ mkfontscale$ mkfontdir$ f

暂时修改：ifconfig eth0 downifconfig eth0 hw ether A4:BA:DB:ED:BD:1F(网卡的mac地址)ifconfig eth0 up永久修改：vi /etc/init.d/rc.local在文件末输入上述三行，：wq 保存退出。

Linux的内核版本Linux内核的版本号分为主版本号、次版本号和扩展版本号等。根据稳定版本、测试版本和开发版本定义不同版本序列。稳定版本的主版本号用偶数表示，例如：2.2、2.4、2.6。每隔2～3年启动一个Linux稳定主版本号。紧接着是次版本号，例如：2.6.30、2.6.31、2.6.32。次版本号不分奇偶数，顺序递增。每隔1～2个月发布一个稳定版本。然后是升级版本号，

/usr/usr usually contains by far the largest share of data on a system. Hence,this is one of the most important directories in the system as it contains all the user binaries, their documentation, l

/etcThis is the nerve center of your system, it contains all system related configuration files in here or in its sub-directories. A "configuration file" is defined as a local file used to contr

/bootThis directory contains everything required for the boot process except for configuration files not needed at boot time and the map installer. Thus, the /boot directory stores data that is us

//配置静态IP，子网掩码，网关sudo vi /etc/network/interfacesauto loiface lo inet loopbackauto eth0iface eth0 inet staticaddress 211.80.61.54netmask 255.255.255.0gateway 211.80.61.254//配置NDSsudo

(1).Shell编写需要涉及到许多系统调用，如：    fork(), exec(), wait()而系统调用失败时，一般都不输出错误信息，所以在代码中包含错误处理对debug非常重要，如：    if (execlp("ls", "ls", (char *)0) == -1) {        perror("execlp");        exit(EXIT_FAI

Fedora的Network-Manager真难用，有时候擅自建个网络连接叫Auto_Ethernet，建个能上网的也就算了，结果配置又不对；有时候手动配置了个连接又启用不了；算了，干脆停用Network-Manager：    $ sudo systemctl disable Network_Manager.service手动配置网络连接：网络连接的配置文件在/etc/s

Fedora17用了2年多了，想着也该换个发行版用用了，当初还是个菜鸟的时候，听说Gentoo什么都要从源码编译，没敢去用，现在稍微有了点积累，想回过头来再试试。由于是初次接触Gentoo（尽管以前折腾过LFS），预计工作量会比较庞大，也会遇到各种各样的问题，所以现在开始做个分段记录（Part 1 - Part ？）。

/binThe bin directory contains several useful commands that are of use to both the system administrator as well as non-privileged users. It usually contains the shells like bash, csh, etc and comm

sudo rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpmsudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux sudo yum install flash-plugin nspluginwra

$ su$ cd /media$ mkdir tmp                                                                   # make a temporary directory to mount /boot$ mount /dev/sda3 tmp

1. http://man.chinaunix.net/network/iptables-tutorial-cn-1.1.19.html2. http://blog.youkuaiyun.com/trochiluses/article/details/94910693. $ man iptables