Linux

Linux packages can be broadly divided into two categories: source packages and binary packages.The source package is an open source (modifiable) software package written by C language. Source package in the compilation of the installation can be

Command name: TouchFeatures: New filedirectory where the command is located:/bin/touchUsage: Touch file nameCommand name: CatFunction: Display file contentsdirectory where the command is located:/bin/catUsage: Cat [-n] File nameParameters:-N Display

In Linux, use the PWD command to view the full path to the current working directory. Simply put, you will have a current working directory every time you operate in a terminal.When unsure of the current location, PWD is used to determine the exact

The Linux history mechanism numbers the commands entered on the command line and saves them to maintain the command history. Commands entered during a logon session are saved in shell memory and added to the history file if the Abort command is

Three functions of the operating system: 1, management hardware resources; 2. Provide portable software interfaces independent of architecture and hardware 3, handle simultaneous access of different applications to the same hardware resourcesThe

If we use the/DEV/SDB1 and/DEV/SDC1 two partitions to establish a RAID1 device/dev/md0:# mdadm--create/dev/md0--level=1--raid-devices=2/dev/sd[bc]1# mkfs.ext4/dev/md0After rebooting, the/DEV/MD0 device will automatically become the/dev/md127

Command name: FindFeatures: File SearchCommand path:/bin/findUsage: Find search scope match criteriaOther:Example:Find/root-name InitFind/root-size +1024Find/root-user DashenFind/root-group YizuFind/root-cmin-5Find/root-size

Linux hard links and soft links1.Linux Link ConceptThere are two types of Linux links, one called hard links, and the other called Symbolic links (symbolic link). By default, the LN command produces a hard link."Hard Connect"A hard connection is a

@cacti1.install Epel extends Source2.install Lamp Use Yum methodYum install-y httpd php php-mysql mysql mysql mysql-server mysql-devel php-gd libjpeg libjpeg-devel libpng libpng-devel3.install Cacti Net-snmp RRDtoolYum install-t cacti Net-snmp

top-01:06:48 up 1:22, 1 user, load average:0.06, 0.60, 0.48tasks:29 Total, 1 running, sleeping, 0 stopped, 0 zombieCpu (s): 0.3% us, 1.0% sy, 0.0% ni, 98.7% ID, 0.0% wa, 0.0% Hi, 0.0% simem:191272k Total, 173656k used, 17616k free, 22052k

Objective:If you want to ping a large number of disjoint addresses and want to know what to put back, there is a very good tool--fping under the Linux system.Fping Official website: http://www.fping.org/fping Download:

Http://www.cnblogs.com/peida/archive/2012/11/07/2758084.htmlThe tail command writes the file to standard output starting at the specified point. Using the-f option of the tail command makes it easy to see the log files that are being changed, TAIL-F

DF (disk free): Lists the overall disk usage of the file systemUsage:DF [-AKMHI] [directory or file name]Parameters:-A: List all file systems, including system-specific/proc and other file systems-K: Displays the file system in KB capacity;-M:

This time decided to learn embedded, change to install a Linux system first familiar with the use of Linux system, but their own computer installed on the Win7 system does not want to install a dual system, one is idle trouble, and the second is

How to install the Apache server in LinuxDue to the learning needs, all the Apache source code packages are manually installed, and the installation process has many strange problems. However, if you find out what the problem is, it is not too

Configure static IP address in CentOS6.7 To configure static IP addresses in CentOS, follow these steps:Servers generally have their own static IP addresses so that they can be connected to the LAN.1. Edit the NIC file and modify the NIC

Detailed description of interruptions and exceptions (1) and detailed description of interruptions ( There are a total of 256 types of exceptions or interruptions on Intel x86, that is, commonly referred to as interrupt vectors, which have their

How to Use strace to diagnose problems Early in the year, if you knew there was a strace command, it would be awesome. Now everyone knows about strace. If you encounter performance problems and ask for help, we recommend that you use strace to hook

CMake quick tutorial If you think makefile is a headache, if the project is getting bigger and bigger, you are getting confused. If you get tired of running a lot of commands during compilation, so it is necessary for you to take ten minutes to view

FastDFS installation and deployment 1. installation environment1.1 System EnvironmentSystem: Minimal RedHat 6.4 Installation Versions: 2.6.32-358. el6.x86 _ 64 1.2 Software VersionFastDFS version: FastDFS_v3.06.tar.gz Nginx version: nginx-1.0.11.tar.