Linux

SOURCE Command usage:SOURCE FileNameFunction: Reads and executes the commands in the filename under the current bash environment.Note: This command usually uses the command "." To replace.such as: source. BASH_RC and. The. BASH_RC is equivalent.Note:

Find [Search scope] [search criteria]For example:Find/-name Install.logFind/-iname Install.log #不区分大小写Find/root-user Root #按照所有者进行搜索Find/root-nouser #查找没有所有者的文件Find/var/log-mtime +10#查找10天前修改的文件-10 files modified within 10 days10 10 days of modified

First, the noun understandingUser, Group, and Rights managementUser:Identifier:User name, User IDLogin: User name, passwordAuthentication mechanism:Certifications, authorizations, audits (logs)Process (dynamic): Run as a specific userFile (Static):

Linux root file system detailed:/boot: System boot related files, such as kernel, INITRD, and Grub (bootloader)/dev: Device filesDevice files:Block devices: Random access, data blocksCharacter Devices: Linear access, by characterDevice number: Main

1. Introduction1. Libraries under LinuxThe difference between static and shared libraries (dynamic libraries) is that the code is loaded at different times.The code for the static library has been loaded into the executable program during

I love to toss. The Linux environment is installed in the local virtual machine. To configure the NIC file for Linux.As follows:Vi/etc/sysconfig/network-script/ifcfg-eth0;Just installed the system, no vim, just make the use of vim.Use the TAB key

ObjectiveI'm going to write another article on my father's tutorial.What you need to figure out is that1, to understand which Linux host login which Linux host does not require a password?2, the two host user name password consistent (recommended to

SSH is the abbreviation for secure Shell, developed by the IETF Network Working Group, and SSH is a security protocol based on the application layer and transport layer. SSH is currently a more reliable protocol that provides security for Telnet

One. View system load commandsTo view the current system load: W or uptime650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/71/99/wKiom1XUMb6wFbCkAAE3Nsqshjs654.jpg "title=" 1.jpg " alt= "Wkiom1xumb6wfbckaae3nsqshjs654.jpg"/>Here we can see

1. View Log common commands tail:- n is the display line number, equivalent to the NL command;tail-100f Test.log Real-time monitoring of 100 rows of logsTail-n test.log query log at the end of the last 10 lines;Tail-n +10 test.log Query all logs

First, Introduction AutoJump is a command-line tool that allows you to jump directly to your favorite directory without having to worry about where you are now. Second, installation Yum Install AutoJumpThird, usageJ [part of the name or name of the

Save to keep your goals and learning tasks clear.Photo Excerpt: http://baidu.blog.51cto.com/71938/1683613650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/71/84/wKioL1XS_CqC_igcAAEMPU9dZ40041.jpg "title=" Primary Linux operations "style="

1. Pip Install software[[Email protected] ~]$ pip install somepackage[...] Successfully installed SomepackageParameters:--upgrade Upgrade a Package2. Pip Show view installed software (matplotlib as an example)[Email protected] ~]$ PIP show

If there is no screen command, then you need to installFirst Step InstallationYyum Install screenAnd thenRpm-qa|grep Screenscreen-4.0.3-4.el5This is my installation.Well, in the process there is a need to enter Y and N, enter Y. Finally, we saw

Accessing Linux systems using SECURECRT650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/71/A1/wKiom1XVQNHyVd1aAAOqjimM89A493.jpg "title=" 12.png "alt=" Wkiom1xvqnhyvd1aaaoqjimm89a493.jpg "/>Use the command: SZ + file name650) this.width=650

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1. Background of the problemBecause I use the Linux system (UBUNTU), so login QQ has always been my problem. Webqq really good, but I still want to pidgin, because the single function from the perspective of Pidgin is still a good choice. 2. Steps

1.linux loop CP file to new directoryFor i in ' ls 'DoCP $i/usrDone2.linux loop compresses all files under a directoryFor i in ' ls 'DoCP $i. tar.gz/pathDoneNote: LS next to the 2 symbols you can not enter the wrong, the notebook is the number key 1

#!/bin/bash#允许的进程数thread_num=200#定义描述符为9的管道MKFIFO tmpEXEC 9<>tmp#预先写入指定数量的换行符, a line break represents a processFor ((i=0;iDoEcho-ne "\ n" 1>&9Doneif [$#! = 1]; thenecho "The parameters you enter are not correct!";exit-1;FiWhile Read

Signal VolumeThe semaphore is an upgraded version of the mutex that turns 1 in the mutex into N, for a simple example: suppose there are 10 people now, a cell phone, and 10 people are competing to use the phone to call this is the mutex. For the