Linux

Net_device->feature| Netif_f_no_csum:no need to use L4 checksum, it used for loopback device.| Netif_f_ip_csum:the device can compute L4 checksum in hardware, if only for TCP and UDP over IPv4.| Netif_f_hw_csum:the device can compute the L4 checksum

Linux 3.4.103 kernel ported to s3c6410 Development BoardThis week is almost in the face, at first it feels very unworthy, transplant this waste of time things, want to immediately fix, and then quiet reading & coding.The thing about the pit daddy is

1. First use switch to root user;2. Use the Fdisk-l command to view the disk information and locate the U disk (depending on the size shown)3. Create a mount point under/mnt, such as creating a USB folder: Mkdir/mnt/usb4. Mount the U-disk with mount,

First, CAT has three major functions:1. Display the entire file at once. $ cat FileName2. Create a file from the keyboard. $ cat > FileName (only new files can be created and existing files cannot be edited)3. Merge several files into one file: $cat

One, the dump command:This command can be backed up for the entire file system, or only for directories. You can also specify a different backup level ( -0~-9 a total of 10 levels).Dump-w: Lists whether the partitions with the dump settings

DD1. RoleThe DD command is used to copy the file and convert and format the data according to the parameters. 2. FormatDD [Options]3.[opitions] Main parametersbs= bytes: Forced ibs= and obs=. cbs= Bytes: Each conversion is specified. conv= Keyword:

Reprint to: http://www.cnblogs.com/peida/archive/2012/11/01/2749048.htmlThe NL command is used in a Linux system to calculate the line number of a file. NL can automatically add a line number to the output file content! The default result is a bit

LinuxRAID5volumes andLVMlogical volumes Add DiskAdd 3 hard drives, because building RAID5 volumes requires at least 3 drives650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/46/C1/wKiom1P0S1mS024IAAFxjSLufRg217.jpg "title=" Picture 210.jpg

Batch conversion GBK file to UTF-8 encoding method under LinuxView File EncodingFile-i filename1. Recursive conversions (including subfolders)Find Default-type d-exec mkdir-p utf/{} \;Find Default-type f-exec iconv-f gbk-t UTF-8 {}-o utf/{} \;These

Linux can set the welcome information before and after the login, although there is no practical use, but this time in the actual work encountered, I will tidy up and share with youBefore entering the user name in the login system, you can see the

The top of the Linux file system is/, called the root of Linux, and all directories, files, and devices are in/below.File typeLinux has four basic file system types: Normal files, directory files, continuous files, and special files. You can use the

L Linux Performance Tools IntroductionP CPU HighP Disk I/OP NetworkP MemoryP Application TrackingL The relationship between the operating system and the application is likened to "Chunwangchihan".Application performance issues/functional issues, in

(1) IostatThis command detects if the storage device is working properly, shows the details of the storage system, can see the IO status of each disk, and can monitor the CPU usage. -: the[[Email protected]]$ iostatlinux2.6. --308. El5 (AAA) August 2

Interrupt processing process is as follows:1, when the interrupt occurs, the CPU executes the exception vector VECTOR_IRQ code.2, in the VECTOR_IRQ, will eventually call the interrupt processing of the total entry function Asm_do_irq.3. ASM_DO_IRQ

2014-08-19REDIRECT Symbol greater than sign: a command execution result (standard output, or error output, which would otherwise have been printed to the screen) instance of redirecting other output devices (files, open file operators, or printers,

Lua Installation/configuration method under Linux and Windows systemsLinux systems: 1) Go to Lua's website (http://www.lua.org/ftp/) to download the latest release package, such as lua-5.2.3.tar.gz 2) Extract with command TAR-XZVF lua-

Virtual Machine Linux shared host Windows folder, virtual machine linux shared host The following uses the "1" folder on the desktop as the shared folder to share with the Linux System in the virtual machine. Add a folder in Windows host to the

Install JDK1.8 and linuxjdk1.8 in Linux 1. Before installation, delete the OpenJDK that comes with Linux: (1) run java-version, and you will find the OpenJDK that comes with Linux. Run rpm-qa | grep OpenJDK to find the name of OpenJDK that comes

Configure network connection information for CentOS The basic network configuration includes configuring the host name, configuring the NIC, and setting the client name resolution service. 1. Configure the Host Name To view the name of the current

Python log monitoring (pronunciation) Some friends asked me to help with a log monitoring script some time ago. The requirements are as follows: 1. windows Environment 2. Sound is triggered when the keyword of the log is matched. The matching