Linux

What is an rpm package for linux? rpm is an Internet download package packaging and Installation tool, which is included in some distribution versions of linux. It generates a file with the. rpm extension. The www.2cto.com rpm package is somewhat

Recently, due to some inexplicable accidental data deletion in the business, we have studied the log4j packet output and want to use log4j to record which data has been deleted by mistake. The specific method is to create a new package, then create

Step 1 of installing the graphical interface for CentOS minimal: connect to the network: CentOS minimal. after iso is installed, enter the terminal. By default, the network is disabled. Enable the NIC and automatically obtain the ip address.

Statistics on linux servers: 1) number of port 80 connections: www.2cto.com netstat-nat | grep-I "80" | wc-l12) count the number of httpd protocol connections ps-ef | grep httpd | wc-l13) and the number of connected connections. The status is

The NFS Network File Server simply assumes that the NFS Network File Server www.2cto.com NFS is short for the Network File System and is mainly used for sharing between linux and linux. NFS is installed by default in centos. It depends on two

Common Linux commands (5) -- compression and decompression commands 1. Command name: gzip www.2cto.com execution permission: All Users Function Description: Compressed File Syntax: gzip option [file] compressed format :. gz gzip can only compress

Linux cpuinfo file details in Linux system, how to learn more about CPU information? Of course, it is checked through cat/proc/cpuinfo. But for example, how many physical CPUs, cores, and threads are there? After checking, my development machine is

Case statement in shell: It can match the variable content with multiple templates, and then decide which part of the Code should be executed based on the template that matches successfully. Format of www.2cto.com: case matching mother board in

The composition of an embedded Linux system is a typical embedded Linux system. According to the storage space, the Boot zone, kernel zone, and file system zone are usually divided. The Boot Loader and system parameters are stored in the Boot zone,

#! /Bin/sh ######################################## ######################## Function: create linux bridge, centos 5 test pass.# User: chenjian# Date: 2011-06-30 ^_^.######################################### ###################### NETWORK_DIR

Step 1: Obtain the kernel codeIn these years, Linux has become a buzzword. None of the students and IT professionals who boast computer proficiency have installed one or two Linux operating systems on their computers, and have consciously caught up

Most Linux Server releases offer better performance than proprietary systems. However, this does not mean you can rest assured that you do not need to optimize the server performance. In fact, there are always some ways to improve performance,

  1. the kernel uses three data structures to indicate opened files. The relationship between them determines the impact of one process on another process in file sharing.   (1) Each process has a record item (task_struct) in the progress table,

  The following installation manual was created in the first version of hadoop, which is not consistent with the current version of hadoop.   I. preparations: Download the hadoop:

The following error is prompted when you copy data using the scp command today:@ WARNING: remote host identification has changed! @It is possible that someone is doing something nasty!Someone cocould be eavesdropping on you right now

  Grep is the most powerful: Regular Expressions supported Grep [options] 'pattern' files Examples: Grep -- color 'root'/etc/passwd Search user information for rows containing the 'root' character Notes1: grep has many parameters, including-I Ex:

  To be improved... Sort: It is very efficient and powerful to implement the text sorting algorithm. The content of the original file is not modified. Only the content output on the screen is modified. Example: sort/etc/fstab #-U remove

  Build a local software Repository 1. mkdir/media/cdrom 2. Load the rhel6 disc to/media/cdrom. Mount/dev/cdrom/media/cdrom * Iso loading command. After the system restarts, You need to reload the CD or iso file. Mount-o loop/root/xxxx.

  1. required files: 1. All-20071007.tar.bz2 (decoder) 2. Win32codecs-20040703.tar.bz2 (support for windows Decoding in multiple formats) 3. Divx4linux-20020418.tar.gz (supporting DivX format) 4. Font-arial-iso-8859-1.tar.bz2 (font) 5.

  C programming practices in Linux (V) -Driver Design   1. Introduction The device driver is the interface between the operating system kernel and the hardware of the machine. It shields the hardware details from the application. Generally, the