Linux

Linux System Automation Installation Basicsinstallation programCentOS System InstallationSystem Startup process:Bootloader-->kernel (INITRAMFS)-->rootfs-->/sbin/initNote: The installation process is different from the files during the startup

1. Directory Management Command: (LS, CD, pwd, mkdir, rmdir, tree)LS: View directory informationCD: Enter a directoryPWD: View the current directory pathmkdir: Creating a DirectoryRmDir: Delete Empty directoryTree: View Directory Branches tree2.

Third Week blog assignment1. Lists the user names of all logged-in users on the current system, note that the same user logs on multiple times, only once. W.H.O. | Cut-d '-f1| Sort-u2. Remove information about the user who last logged on to the

1. List the user name of all logged-in users on the current system, note: The same user logged in multiple times, only once.The commands for viewing system users are:(1)getent passwd650) this.width=650; "src="

Generally in order to host security and other factors, we will prohibit the host is ping test, this method of prohibition is more, the following methods are their own practice in the process of summarizing the experience, in this record to make

Putty;1, install putty,Puttygen. 2. Open Puttygen, click Generate to generate the key,save Privatekey the key. 650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M02/88/5E/wKiom1fyV9iCp40KAACJivZQWjk159.png-wh_500x0-wm_3 -wmp_4-s_2665933891.

Environment variable ShellVariables: Memory space, named memory space Echo $SHELL where the SHELL is a variable inside is/bin/bashsudo su enters rootprintenv commandCommands: Internal commands and external commandsThe command that comes with the

Source: http://www.2cto.com/os/201111/109920.htmlIn the shell command terminal, CTRL + N equals the direction-down direction key, ctrl+p the direction key that corresponds to the direction.In the command terminal through them or the direction of the

Recently saw someone ask questions, how to prohibit or do not save history, some people say that history-c can clear the command history, in fact, it is only clear the local records, again remote with history view, command or some. It is also said

http://blog.chinaunix.net/uid-14735472-id-2921377.htmlexplain some of the data structure of the virtual file system and the relationship between them, some places do not understandhttp://www.docin.com/p-941544538.htmlexplains the links between the

Special symbols:> or 1> output redirection: The output from the front is entered into the file behind, it clearsThe original contents of the file.>> or 1>> Append output redirect: Append the front output to the file in the back, not clearExcept for

PS # # (All) is the process running on the front endPS-A # #shell中的进程-X # #shell processes running in the backgroundCheck the resource occupancy rate to add O, and%Aux is the view process,%cpu,%mem is the resource occupancy rate of the processIt is

CentOS installed, but still can not communicate with the external machine, in the black window operation is still a lot of inconvenient, such as can not be copied. So, we need to configure the IP, and then use the Remote Connection tool to connect

One, bridging modeVirtual machine and the current use of the same PC, can be directly Sisu network, directly connected to the Internet router, bridging is the most in line with the actual work environment, mainly for the LAN environmentSecond, Nat

1. List the user names of all logged-in users on the current system, note that the same user logs on multiple times, only once. W.H.O. | Cut–d ' –f1 | Uniq650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/88/69/wKiom1f17rHhhGRyAAAUtbXhma809

1) Tool Descriptionin the SSH login software such as SECURECRT, upload/Download the file by entering the Rz/sz command in the Linux interface. For RHEL5, Rz/sz is not installed by default so it needs to be installed manually.SZ: Sends the selected

1. View the current file size du-sh.du [-ABCDHHKLMSSX] [-l ][-x ][--block-size][--exclude=][--help][--version][directory or file] Common parameters:-A or-all display disk usage for each specified file, or display their own disk usage for each file

' ASCII ' codec can't encode characters in position 162-165:ordinal not in rangeaaa.py file is already set#!/usr/bin/env Python3# coding = ' Utf-8 'But execution always gets an error.' ASCII ' codec can ' t encode characters in position

First, the PrimerOpen Source AddressHttp://pan.baidu.com/s/1slCMspR. NET core Microsoft is still working, but as a commercial there is a distance, many development libraries are not yet available for. NET Core, so we haven't seen a large use case,At

CdYum Groupinstall ' development Tools '-yYum Install Libx11-devel freetype-devel-ywget wget http://prdownloads.sourceforge.net/wine/wine-1.6.tar.bz2TAR-JVXF wine-1.6.tar.bz2CD wine-1.6./configureMakeMake installInstalling VNC Remote DesktopAfter