Linux

If the system is out of power or a disk problem occurs, the fsck command can be used to check the file system. This step is optional and should be used sparingly.Recommendation before use: When using the FSCK command, the inspected partition must

Building a soft RAID disk arrayWhen you get the video, rename it to RAID for Linux.exe so you can see!!1. rpm-ivh/media/cdrom/server/mdadm-2.5.4-3.el5.i386.rpm2. Add up to zero or more drives for the machine3. Take 4 hard drives as an

1. IntroductionA program is a sequence of machine instructions stored in a file. Typically it is the code that the compiler compiles the source code into binary format. Running a program means loading the machine instruction sequence into memory and

There is a place to see that the start-up process is ARCH/ARM/BOOT/COMPRESSED/HEAD.S-----> Call arch/arm/boot/compressed/misc.c decompress_kernel ()function to decompress the kernel. ---->arch/arm/kernel/head-common. S initialization---->init/main.c

The NL command is used in a Linux system to calculate the line number of a file. NL can be output file content automatically add line number, its default result and cat-n a bit different, NL can do more than the line number display design, including

Sed is a good file processing tool, itself is a pipe command, mainly in the behavior of the unit processing, you can replace the data rows, delete, add, select and other specific work, the following first understand the use of SEDThe SED command

1. What is a zombie process?A zombie process is a child process that ends before the parent process, but the parent process does not reclaim the child process and frees the resources that the child process occupies. The zombie process also occupies

Be careful to make sure that/path-to-php/bin/php-config exists first.Download Link:Http://pan.baidu.com/s/1hqh5pDM #解压xcache源代码 tar-zvxf xcache-3.1.0.tar.gz #进入安装目录 CD xcache-3.1.0 #安装前执行phpize配置 / Path-to-php/bin/phpize #安装配置 ./configure--

Linux Create disk and disk partition managementView disk Information[Email protected] ~]# fdisk-ldisk/dev/sda:42.9 GB, 42949672960 bytes, 83886080 sectorsUnits = sectors of 1 * MB = bytesSector size (logical/physical): bytes/512 bytesI/O size

When learning Linux, sometimes the terminal printing message is very important to us, but the terminal display also has a certain buffer space, when the printing information is very long, the front of the information will be overwritten, so here

In Linux often found that the free memory is very small, it seems that all the memory is occupied by the system, the surface of the memory is not enough to use, it is not. This is an excellent feature of Linux memory management, which differs from

One, under what circumstances need remote boot?If our servers are not deployed locally (which is actually usually the case, we will host the servers to the IDC room),and the server in the computer room more than one, one is closed, we can remotely

Most races can be avoided by using the concurrency control primitives of the kernel and applying several basic principles. The first rule is that the sharing of resources should be avoided whenever possible, and the obvious application of this idea

first, the production of U-boot.bin documents:Tar xjf u-boot-1.1.6.tar.bz2CD u-boot-1.1.6Patch-p1 Make 100ask24x0_configMakesecond, make the uimage file suitable for 4.3 inch screen:Tar xjf linux-2.6.22.6.tar.bz2CD linux-2.6.22.6Patch-p1 Mv..

Linux commands (3) CatCat is viewing the contents of a file?Command format: Cat fileCommon parameter Description:-N or-nimber the number of rows for all outputs starting from 1.Example:cat/etc/passwd?-B or-number-nonblank and-n are similar, except

1 File descriptorThe kernel maintains a record table of open files (implemented as a struct array) for each process, and the file descriptor is a small positive integer (0-1023) (struct array subscript), which represents an entry for the record

Explain the/etc/fstab, boot automatically mount[Email protected] home]# Cat/etc/fstablabel=//ext3 Defaults 1 1Label=/boot/boot ext3 Defaults 1 2TMPFS/DEV/SHM TMPFS Defaults 0 0Devpts/dev/pts devpts gid=5,mode=620 0 0Sysfs/sys Sysfs Defaults 0

After CentOS is imported under VirtualBox, the Internet cannot be accessed. virtualboxcentos From the "management" menu of VirtualBox, select "Export Virtual Computer" to save a backup. Then, select "Import Virtual Computer" from the "manage"

Bind multiple IP addresses to the network card of CentOSAll devices in CentOS are files. The NIC also defines. IP binding in the file. You only need to change the file. Nic files in the directory:/Etc/sysconfig/network-scripts: ifconfig: eth0Link

View and set the installation path of the software in linux. 1: You can use the whereis software name to find the file location in the system. For example, if you want to find the eclipse file, you can: [Root @ localhost ~] # Whereis eclipse