8 Linux grep

Well, here can not complain because of network reasons, several times to write blog is the speed of the good coax to back, Dan Hurt Ah! Text Search tool: Grep,egrep,fgrep 1 (1) grep "^[[:alpha:]]*"/proc/meminfo(2)grep

Linux Programming environment

gmp

Yum-y install gcc gcc-c++ libtool-ltdl libtool-ltdl-devel OpenSSL openssl-devel Curl curl-devel libjpeg libjpeg-devel Lib PNG libpng-devel freetype freetype-devel libc-client libc-client-devel gd gd-devel libmcrypt libmcrypt-devel mcrypt libic U

Basics of Linux Learning

First, the requirements of Linux learning:1. Calculator Introduction not hardware-related knowledge;2. Start from Linux installation led order;3. Basic skills of Linux operating system: "User, Group Souvenirs", "View Souvenirs", "program definition"

Linux Windows modifies keyboard mappings

Linux is the editor ~/. Xmodmap fileRemove Lock = Caps_lockKeysym Escape = Caps_lockKeysym Caps_lock = EscapeAdd Lock = Caps_lockThen make it effective: Xmodmap ~/. Xmodmap. Each time the keyboard interface is reseated, the command may have to be

Linux-Common commands (2) permission management commands, linux-permission management

Linux-Common commands (2) permission management commands, linux-permission management Permission management command: chmod Command name: chmod Command: change the permisssions mode of a file Command path strength:/bin/chmod Execution permission:

Linux-Common commands (3) file search commands, linux-Common commands

Linux-Common commands (3) file search commands, linux-Common commands File SEARCH Command: find Command name: find Command path strength:/bin/find Execution permission: All Users Function Description: file search Syntax: find [search range]

Install CentOS 6.x on PXE + Kickstart

Install CentOS 6.x on PXE + Kickstart I. PrefaceMost of this article is for reference: It is mainly used for learning. 1.1 What is pxePXE (Pre-boot Execution Environment, Pre-start Execution Environment) is the latest technology developed by Intel,

Install GCC in RedHat --- solve the dependency problem

Install GCC in RedHat --- solve the dependency problem When installing gcc, RedHat Linux requires cpp and cloog-pplBut this dependency is required when you install cpp: libmp Fr. so.1 () (64bit) is needed by cpp-4.4.6-3.el6.x86_64The two

Solution For nic unavailability after the VMware CentOS virtual machine is completely cloned

Solution For nic unavailability after the VMware CentOS virtual machine is completely cloned Many people have encountered this situation. After the CentOS virtual machine is fully cloned in VMware, the NIC cannot be used. The main reason why the

Introduction to Linux: ac commands in Linux

Introduction to Linux: ac commands in Linux The ac command in Linux reports the user connection time based on the logon entry and exit in the current/var/log/wtmp file. The default value is hour. If no user ID is used, the total time is reported.

Crontab details in Linux

Crontab details in Linux Overview Task Scheduling: refers to a specific command or Program executed by the system at a certain time. Task Scheduling category: -System work: some important work must be carried out repeatedly, such as virus scanning. -

VnStatSVG: The best Web Front-end of the traffic monitoring software vnStat

VnStatSVG: The best Web Front-end of the traffic monitoring software vnStatIntroduction to vnStat VnStat is a lightweight network traffic monitoring tool. Currently, all major Linux/BSD systems have built-in support. VnStat only supports command

Introduction to Linux: anacron commands in Linux

Introduction to Linux: anacron commands in Linux If our Linux host is in the starting status all day long, we only need the atd and crond services. If our server is not started 24 hours a day, then we need anacron's help. Anacron cannot replace cron

Exploring the Linux Startup Process

Exploring the Linux Startup Process Reading directory Introduction Linux Startup Process Overview Grub loads Linux kernel and initramfs How to find the initramfs File Init system based on systemd Enter graphic interface This article is a bit

CentOS attached hard disk

CentOS attached hard disk As we have said before, the mount point is a directory, and this directory is the entry to the disk partition. But before you mount the file, you 'd better determine the following: A single file system should not be

Basic configuration and view of CentOS Server

Basic configuration and view of CentOS Server1. Set static IP addresses1. Modify Nic configuration EDIT: vi/etc/sysconfig/network-scripts/ifcfg-eth0DEVICE = eth0 # describe the DEVICE alias for the NIC, for example, it is eth0 in the ifcfg-eth0

Configure upstream in Nginx for Load Balancing

Configure upstream in Nginx for Load Balancing If Nginx does not have to proxy only one server, then it cannot be as popular as today. Nginx can configure proxy for multiple servers. When one server is down, the system remains available. The

Learning the Keepalive parameters of TCP in Linux

Learning the Keepalive parameters of TCP in Linux Basic PrinciplesThe Keepalive of TCP can be simply understood as the keep tcp alive, which is used to detect whether the TCP sockets connection is normal or has been disconnected. The principle of

Display the basic Online reconfiguration results of the Zorka Monitoring Platform

Display the basic Online reconfiguration results of the Zorka Monitoring Platform In the previous article (), I briefly introduced how to use the Online reconfiguration of Zorka, but I didn't explain how to see the Online changes. Take tomcat as

How to Use BackupPC in Linux to set up a cross-platform backup server

How to Use BackupPC in Linux to set up a cross-platform backup server Maybe you didn't find out from my previous articles about backupninja and backup-manager that I am a super standby "fan ". When it comes to backup, I would rather back up too much

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