Linux

IFUP-Start a preconfigured net interface. Ifdown-Stop A (preconfigured) net interface. Ifstatus-Show the state of a (preconfigured) net interface. Ifrenew-Renews the DHCP lease on a net interface. Ifprobe-Checks if the configuration for the

1) fstat, stat, lstat system call# Include# Include # Include // This is not required for Linux systems and is required for UNIX systems. Int fstat (intFildes, struct stat * BUF ); Returns information about the state file related to the file

In Linux 0.11 kernel, when performing address ing, we need to first distinguish the three addresses and their transformation concepts:A. Virtual and logical address of the Program (process); B. Linear address of the CPU; C. Actual physical memory

// Obtain the local IP address Function Qstring getlocalip () { int sock_get_ip; char ipaddr [50]; struct sockaddr_in * sin; struct ifreq ifr_ip; If (sock_get_ip = socket (af_inet, sock_stream, 0) =-1) { printf ("socket create failse...

Default = 1 Timeout = 5 Hiddenmenu Title Windows XP Root (hd0, 0) Chainloader + 1 Title Ubuntu 9.10 Root (hd1, 1) Kernel/boot/vmlinuz-2.6.31-15-generic Ro root =/dev/sdb1 ### Begin automagic kernels list # Lines between the automagic kernels list

In Linux, modify the IP address, DNS, and route command line to set the IP address in the Ubuntu command line.CAT/etc/Network/interfaces # This file describes the network interfaces available on your system # And how to activate them. For more

# Uname-A # view kernel/operating system/CPU Information# Head-N 1/etc/issue # view the operating system version# Cat/proc/cpuinfo # view CPU Information# Hostname # view the computer name# Lspci-TV # list all PCI devices# Lsusb-TV # list all USB

Directory:(1) hardware configuration problems:(2) the simplest method for installing the latest official driver for ATI or NVIDIA graphics cards:(3) What if the black screen of the computer is restarted after the video card is installed?(4) When a

Name: crontab　　Permission: All Users　　Usage:　　Crontab [-u user] FileCrontab [-u user] {-L |-r |-e}　　Note:Crontab is used to allow users to execute programs at a fixed time or interval. In other words, it is similar to the user's time table. -U user

// Get the Gateway Qstring getgateway () { file * FP; char Buf [512]; char cmd [128]; char gateway [30]; char * TMP; strcpy (CMD, "IP Route "); fp = popen (CMD, "R"); If (null = FP) { perror ("popen error"); return ""; } while (fgets (BUF,

// Obtain the MAC address function of the Local MachineQstring getlocalmac () { int sock_mac; struct ifreq ifr_mac; char mac_addr [30]; sock_mac = socket (af_inet, sock_stream, 0); If (sock_mac =-1) { perror ("create socket Falise... MAC/N ");

Author: Chinese What are the steps required to start Linux? This article describes in detail the roles of different running levels in startup. Linux seems to be a monster for advanced users on the DOS/Win9x/NT platform. No Config. sys, without

When running a Linux server, we often need to know who is performing process switching and what causes process switching. Because process switching costs a lot, I will give a number from the lmbench test:Context switching-times in

Re: http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp? Topic=%2fcom.ibm.websphere.edge.doc%2fedge%2fcp%2fadmingd45.htm The TCP time Wait interval specifies the length of time that a socket waitsfor a FIN packet from the sender before

RedHat, Suse, And Turbo Linux have obtained many database server certifications; Ubuntu is developed based on Debian and seems to have the best hardware support. (Verification is required. The individual's conclusions are obtained by searching

Level: elementary Deng yanjun (deng.yanjun@163.com), graduate student, Institute of software engineering, Xi'an University of Electronic Science and Technology September 09, 2002 This article describes in detail how to tune Linux system

The computer uses memory to store temporary data. However, due to limited memory capacity, a temporary storage space needs to be opened on the hard disk, which is the swap partition. Swap partitions are also annoying. Hard Disks are much slower than

When deploying applications in Linux, sometimes the socket/file: Can't open so many files problem occurs. In fact, Linux has file handle restrictions (like WINXP ?), In addition, the default value is not very high, generally 1024. As a production

Full text download:Linux listlistlist&hlistunread.pdf directory 1. preface 22. general macros 22.1. typeof22.1.1. define 32.1.2. usage 32.1.3. example 32.2. offset_of32.2.1. define 32.2.2. role 32.2.3. principle 32.2.4. example 32.3. container_of42.3

Bytes. X. CPP file content: # include # include // use C ++ as the compiler void Woo () {printf ("Woo/N");} // Foo as the entry to the shared library, must be the C function extern "C" Foo () {printf ("foo/N"); exit (0); // This must be called,