Linux commands: Task Scheduler crontab Anacrontab at cron

Task Schedule:1. Perform one task at a time in the future: at BatchFormat: At time at-l View Schedule listAt> COMMANDAt> Ctrl+dSpecify time:Absolute time: hh:mm DD. Mm. YY Mm/dd/yyRelative Time: now+#Unit: Minutes,hours,days,weeksBlur Time:

Linux Find Files

Find directory-name "file name"Find/-name "php.ini"Locate file nameLocate PHP.iniOne: Locate commandThe locate command is used to find a file that is faster than the search command, and it requires a database that is built by a daily routine work

Linux under Bash:scp:command not found problem or install SSH packet times wrong requires:libedit.so.0 () (64bit)

One, using the SCP command to transfer files from the physical host to the CentOS 6.1 virtual machine, the following error is indicated:Bash:scp:command not foundThe SCP command is also missing from the CentOS 6.1 virtual machine view.The virtual

1 Linux Installation Libevent

sin

Libevent official website : http://libevent.org/online Documentation: http://www.wangafu.net/~nickm/libevent-2.0/doxygen/html/: https://github.com/libevent/libevent/releases/Unzip, compile, installCreate folder

The-touch,mkdir of LINUX-13 Basic command

1, Touch command used to create blank files and modify file time, Format: touch[options [file];There are three types of file time under Linux@1, change Time (mtime): Content modification time;@2, change permissions (ctime): Change attribute and

Configuring environment variables under Linux system

Introduction of environment variable fileTransferred from: http://blog.csdn.net/cscmaker/article/details/7261921Environment variables in Linux include system-level and user-level, system-level environment variables are system variables to be read by

Linux view number of physical CPUs, number of cores, logical CPUs

CPU Total Cores = number of physical CPUs * Number of cores per physical CPUTotal logical CPUs = number of physical CPUs * Number of cores per physical CPU * Number of hyper-threadsView CPU information (model) [[email protected]~]#Cat/proc/cpuinfo

Linux Firewall Open specific ports (iptables)

View Status:Iptables-l-NAdd the following methods for opening a specific port:Use Iptables to open the following ports/sbin/iptables-i input-p TCP--dport 8000-j ACCEPTSave/etc/rc.d/init.d/iptables SaveRestart ServiceService Iptables RestartSee if

One day a linux Base command Directory Management Class command mkdir

mkdir Creating a directory1 , command formatmkdir [option] Directory name A..2 , command functions through  mkdir  command can be created at the specified location to dirname ( filename specified ) name the folder or directory. The user

[Bird Brother Linux Video tutorial finishing]04_01_linux user management commands in detail

First, user management:1. Add User: useradd [option] USERNAME-u:uid-g:gid (Basic Group)-g:gid,.. (Additional groups)-C: "COMMENT"-d:/path/to/somedirectory-s:shell-m-k:-M:-R: Adding system usersEnvironment variables:PATH:Histsize:Shell:echo $SHELL2.

3rd Linux Common Commands (4) _ Help, user management and decompression commands

bz2

4. Help Commands4.1 Get help info: man(1) Man command Command name Man (English literal: manual) Command path Usr/bin/man Execute permissions All Users Grammar man

Linux Common Simple commands

Remember to keep up to date when installing VMware, reinstall VMware Tools, and follow the instructions below the virtual machine. Install additional software in the Ubantu system, the software format is. Deb, take sublime-text-3 as an example, copy

Jump into the first pit of Linux-because installing Ubuntu causes the HDD to be mistakenly restored. (note testdisk use record)

Skip the crap and go straight to the instructionsThe first few days of the whim to replace the home of the old notebook Linux operating system, is in the amateur life formally into the embrace of Linux. Say dry, release version chose Ubuntu,

Linux disk array technical details (ii)--raid 1 creation

I have described in detail in the Linux disk array technology (a) several types of RAID disk arrays, principles and detailed steps for creating RAID 0. Then this document focuses on how to create a RAID 1 technology:650) this.width=650; "src=" Http:/

Writing the Linux/unix daemon

Original: http://www.cnblogs.com/haimingwey/archive/2012/04/25/2470190.htmlThe daemon is widely used in the Linux/unix system. Sometimes, developers also want to turn their programs into daemons. When creating a daemon, you are exposed to a number

Remotely log on to a Linux server on a Linux terminal

Remotely log on to a Linux server on a Linux terminalIt is easy to log on to a Linux server remotely on a Linux terminal, if the server username is ABC (or root), just enter it at the terminal:then the computer will prompt for a password and log in

Linux common commands and some common problems

Common Linux Commands1 View Linux version 1.1 view Linux kernel version uname-r or uname-a1.2 view the specific version number of Linux cat/proc/version1.3 view the hostname of the Linux system hostname 2 start or shut down the FTP service Service

How to view the number of physical CPUs, cores, threads, and Linux on linux

How to view the number of physical CPUs, cores, threads, and Linux on linux First, let's take a look at what is hyper-threading. Hyper-Threading Technology uses special hardware commands to simulate two logical kernels into two physical chips, so

Centos7 network settings and centos7 network settings

Centos7 network settings and centos7 network settings Essential knowledge: For file editing in linux, the first step is to provide a detailed method for remote connection to Centos. Basic concepts of viBasically, vi can be divided into Command mode,

Error while loading shared libraries: libmysqlclient. so.18: cannot open shared object file: No such file or directory, errorwhileloading

Error while loading shared libraries: libmysqlclient. so.18: cannot open shared object file: No such file or directory, errorwhileloading The following error is reported when zabbix3.2 is started: # service zabbix_server startStarting zabbix_server: 

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