luyện

Let's practice using Powershell cmdlet  Copy-Item [instead of copy or xcopy ] when we want to copy files and/or folders. Powershell: Copy-Item Example: Copy D:\MinnaNoNihongo folder to E:\ drive Powershell: Copy D:\MinnaNoNihongo folder to E:\ drive

...unless "The illiterate of the 21st century will not be those who cannot read and write, but those who cannot Learn , Unlearn , and Relearn ." -  Alvin Toffler

"Blessed are the peacemakers, for they shall be called sons of God." - Luke 5:9

Java Error: Could not find or load main class Java: Common mistake of beginners

Use Remove-Item to delete files, folders, and more than that

"Do to others as you would have them do to you." — Luke 6:31

A swap file allows an operating system to use hard disk space to simulate extra memory.

"But when you give to the needy, do not let your left hand know what your right hand is doing,   so that your giving may be in secret. Then your Father, who sees what is done in secret, will reward you." - Matthew 6:3-4

Let's cleanup orphaned files in %windir%\Installer folder to reclaim space from our expensive SSD.

BIND - Berkeley Internet Name Domain sudo apt-get install -y bind9 dnsutils

"So I say to you: Ask and it will be given to you; seek and you will find; knock and the door will be opened to you." - Luke 11:9

Download link:  https://www.mongodb.com/download-center#enterprise Mongo Shell help Run mongo shell, then run help to display commands. help Try using mongo shell to connect to 100YWeatherSmall database mongo "mongodb://cluster0-shard-00-00-jxeqq.mongodb.net:27017,cluster0-shard-00-01-jxeqq.mongodb.net:27017,cluster0-shard-00-02-jxeqq.mongodb.net:27017/100YWeatherSmall?replicaSet=Cluster0-shard-0" --authenticationDatabase admin --ssl --username m001-student --password m001-mongodb-basics

/*Modify tempdev files' size [from 1024MB] to 2048MB*/ USE [master] GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev2', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev3', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev4', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev5', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev6', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev7', SIZE = 2097152KB ) GO ALTER DATABASE [tempdb] MODIFY FILE ( NAME = N'tempdev8', SIZE = 2097152KB ) GO /*End of script*/

"Do not judge, and you will not be judged. Do not condemn, and you will not be condemned. Forgive, and you will be forgiven." - Luke 6:37

firewall-cmd - firewall d c om m an d line client

PS C:\Users\tuyen> get-help Test-NetConnection NAME     Test-NetConnection SYNTAX     Test-NetConnection [[-ComputerName] <string>] [-TraceRoute] [-Hops <int>] [-InformationLevel {Quiet |     Detailed}]  [<CommonParameters>]     Test-NetConnection [[-ComputerName] <string>] [-CommonTCPPort] {HTTP | RDP | SMB | WINRM}     [-InformationLevel {Quiet | Detailed}]  [<CommonParameters>]     Test-NetConnection [[-ComputerName] <string>] -Port <int> [-InformationLevel {Quiet | Detailed}]     [<CommonParameters>]     Test-NetConnection [[-ComputerName] <string>] -DiagnoseRouting [-ConstrainSourceAddress <string>]     [-ConstrainInterface <uint32>] [-InformationLevel {Quiet | Detailed}]  [<CommonParameters>] ALIASES     TNC REMARKS     Get-Help cannot find the Help files for this cmdlet on this computer. It is displaying only partial help.         -- To download and install Help files for the m

printenv - print all or part of environment NAME        printenv - print all or part of environment SYNOPSIS        printenv [OPTION]... [VARIABLE]... DESCRIPTION        Print  the  values  of the specified environment VARIABLE(s).  If no VARIABLE is speci‐        fied, print name and value pairs for them all.        -0, --null               end each output line with NUL, not newline        --help display this help and exit        --version               output version information and exit        NOTE: your shell may have its own version of printenv,  which  usually  supersedes  the        version  described  here.  Please refer to your shell's documentation for details about        the options it supports. AUTHOR        Written by David MacKenzie and Richard Mlynarik. REPORTING BUGS        GNU coreutils online help: <http://www.gnu.org/software/coreutils/>        Report printenv translation bugs to <http://translationproject.org/team/>

"In everything, therefore, treat people the same way you want them to treat you, for this is the Law and the Prophets." - Matthew 7:12

Shortcut keys to capture screen in macOS 

Mac keyboard shortcuts By pressing a combination of keys, you can do things that normally need a mouse, trackpad, or other input device. fn + Arrow up: Page UP fn + Arrow down: Page DOWN Free Mac OS X Basics Tutorial at GCFLearnFree Whether you're using OS X Sierra, OS X El Capitan, or OS X Yosemite, you can still learn quite a bit from this free OS X Basics tutorial.