r2d2 commands

Linux commands-system management commands I. Installation and logon commands Login1. RoleLogin is used to log on to the system and has the permission to all users.2. Format Login [name] [-p] [-h host name]3. Main Parameters -P: notifies login to retain the current environment parameters. -H: used to transmit user names between remote logins.If you choose to log

Yesterday, a person on the Bug-bash asked: why [--help did not output help information. Someone answered him because coreutils provided the [command to accept the--HELP option, and Bash's own [command does not accept any options.] When you execute [--help ] in Bash, of course the first priority is the internal command [, not the external command [, the execution of /usr/bin/[--help(on my Mac is/bin/[) to get the help information he wants.In fact, there are other external

Linux yum commands and yum commands Yum (all called Yellow dog Updater, Modified) is a Shell front-end Package Manager in Fedora, RedHat, and SUSE. Based on RPM package management, You can automatically download and install the RPM package from the specified server, automatically handle dependencies, and install all dependent software packages at a time, you do not need to download and install it repeatedly

Git Common commands and git Common commands===== Git Common commands ======= 1.Git documentation ===Git Chinese Document viewing address: http://git.oschina.net/progit/=== 2.Git basic commands ===Git config -- global user. name // set the global user name without adding gloabl as a localGit config -- global user. email

Common Liunx commands and common liunx commands 1. Tomcat-related commands Restart tomcat in linux and view tomcat running logs in real time In Linux, restart Tomcat and run the command! First, go to the bin directory under Tomcat Cd/usr/local/tomcat/bin Use Tomcat to close the command ./Shutdown. sh Check whether Tomcat is disabled Ps-ef | grep java Or ps aux |

Linux executes multiple commands consecutively and linux Multiple commandsIf each command is separated by ";", the next command will be executed no matter whether the command at the front is successfully executed or not.Here, the echo in the second command is intentionally written to one o, and the command execution error does not affect subsequent command execution.In this case, if commands are separated b

the template block.P (uppercase)Print the first line of the template block.QExit sed.R FileRead rows from the file.T labelIf branch, starting from the last line, once the condition is met or the T, T command will lead to branch to the command with a label or to the end of the script.T labelAn error branch starts from the last line. If an error occurs or the T or t command, the Branch is routed to the command with a label or to the end of the script.W FileWrite and append the template block to t

Comparison of common DOS and Linux commands, common linux commands Comparison of common DOS and Linux commands Many Linux commands typed at the shell prompt are similar to those you typed in DOS. In fact, some commands are identical. This appendix provides common

Summary of Common commands for executing scripts in Oracle databases and common commands in oracle 1. Execute an SQL script file Copy codeThe Code is as follows:Sqlplus user/pass @ servicename Or Copy codeThe Code is as follows:SQL> start file_names Or Copy codeThe Code is as follows:SQL> @ file_name We can save multiple SQL statements in a text file, so that when we want to execute all the SQL statements

Built-in commands and external commands under Linux1, the Linux command can be divided into internal commands and external commands:Internal commands are transferred into memory when the system starts, and are resident in memory, so the execution efficiency is high.The external command is the software function of the s

Common commands in linux and Common commands in linux Common commands in linux. We should first learn some very basic commands, but the usage is very high. Otherwise, the subsequent courses will not be available. Without a doubt, these commands must be learned, if it is not

In php, php executes system commands. Php: how to execute system commands. php: how to execute system commands in php. Share it with you for your reference. The specific analysis is as follows: how to execute system commands in php, and how to execute system commands in php

Scp commands for Linux learning and XCOPY commands for Windows 1. basic concepts scp commands are used for communication between Linux and Linux hosts, simply put, a linux host can use the scp command to transmit files from another linux host. The XCOPY command is used for learning scp commands in Windows and Win... Li

Summary of Common commands in liunx and summary of liunx commands This article may be of little use for many years of work, but it will certainly be helpful for those who have just come into contact with Java. Now I summarize some common commands that I have come into contact with liunx.1: Common log query commands Ll:

Common network security management commands and network security commands : Common network security management Commands include: ping command to determine whether the host is connected, ipconfig to view IP address configuration, and netstat command to view network connection status, net commands for network operation

Laravel custom commands and laravel custom commands 1. Custom command: Save the custom command in app/Console/Commands, or configure automatic loading in the composer. json file. Php artisan make: console ShowGreet (create scripts to write Commands, the scripts exist in app/Console/

C ++ macro definition commands and macro definition commandsCommands starting with # In a program are pre-compiled commands. There are three types of pre-compiled commands: macro definition commands, file inclusion commands, and Conditional compilation

Freemarker custom commands and freemarker commands 1 Overview Custom commands can be defined using macro commands, which is a concern of template designers. Java programmers can use the freemarker. template. TemplateDirectiveModel class to extend the definition of commands i

Linux commands-linux File and permission management commands-linux permission management 1. ubuntu tips: In ubuntu, you can press ctrl + alt + t to open the terminal, and press ctrl + shift + t to open the second terminal. Adjust the font in ubuntu terminal Font increase: ctrl + shift + plus sign Reduce Font: ctrl + minus sign After entering the vi/vim Editor, enter: set number in command line mode to displ

I. Linux basic management commands and Linux management commands 1. Shutdown and restart command (1) shutdown command: shutdown [Option] Time Option:-c. Cancel the previous shutdown command. -H Shutdown -R restart Example: shutdown-h now # shut down immediately, root User + 10 # shutdown in 10 minutes # Define the absolute restart time (2) Other shutdown commands