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Tips & Tricks : xcrun: error after upgrading to macOS Mojave

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After upgrading to macOS Mojave you might experience following error when trying to run some command line tools like git, for example:

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

To resolve that run those commands in Terminal:

sudo xcode-select --switch /Applications/Xcode.app
sudo xcode-select --switch /Library/Developer/CommandLineTools

Issue should be resolved.

 

 

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Tips & Tricks : Add Sublime Text to right-click menu in Windows

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To make using Sublime Text 3 more convenient, you can add this to right-click context menu.

It will simplify ability to open any file and/or folder with Sublime Text right from Windows Explorer.

@echo off
SET st2Path=C:\Program Files\Sublime Text 3\sublime_text.exe

rem add it for all file types
@reg add "HKEY_CLASSES_ROOT\*\shell\Open with Sublime Text 3"         /t REG_SZ /v "" /d "Open with Sublime Text 3"   /f
@reg add "HKEY_CLASSES_ROOT\*\shell\Open with Sublime Text 3"         /t REG_EXPAND_SZ /v "Icon" /d "%st2Path%,0" /f
@reg add "HKEY_CLASSES_ROOT\*\shell\Open with Sublime Text 3\command" /t REG_SZ /v "" /d "%st2Path% \"%%1\"" /f

rem add it for folders
@reg add "HKEY_CLASSES_ROOT\Folder\shell\Open with Sublime Text 3"         /t REG_SZ /v "" /d "Open with Sublime Text 3"   /f
@reg add "HKEY_CLASSES_ROOT\Folder\shell\Open with Sublime Text 3"         /t REG_EXPAND_SZ /v "Icon" /d "%st2Path%,0" /f
@reg add "HKEY_CLASSES_ROOT\Folder\shell\Open with Sublime Text 3\command" /t REG_SZ /v "" /d "%st2Path% \"%%1\"" /f
pause
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Tips & Tricks : Disable Microsoft Compatibility Telemetry Service

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In case Microsoft Compatibility Telemetry process takes a lot of your processor, you can easily remove it:

  1. Run Command Prompt as Administrator.
  2. Execute following commands in Command Prompt:
  • sc delete DiagTrack
  • sc delete dmwappushservice
  • echo “” > C:\ProgramData\Microsoft\Diagnosis\ETLLogs\AutoLogger\AutoLogger-Diagtrack-Listener.etl
  • reg add “HKLM\SOFTWARE\Policies\Microsoft\Windows\DataCollection” /v AllowTelemetry /t REG_DWORD /d 0 /f
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Tips & Tricks : MariaDB on CentOS : Installation and first configuration

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In order to install MySQL/MariaDB database engine on CentOS follow these:

[root@localhost ~]# yum install mariadb-server
[root@localhost ~]# systemctl enable mariadb
[root@localhost ~]# systemctl start mariadb

[root@localhost ~]# mysql_secure_installation
/usr/bin/mysql_secure_installation: line 379: find_mysql_client: command not found

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

Set root password? [Y/n] Y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.


Remove anonymous users? [Y/n] y
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] n
 ... skipping.

By default, MariaDB comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.

Thanks for using MariaDB!
[root@localhost ~]#

Recommended is also to deploy phpMyAdmin, if you don’t have any issues with installing web server on same box as database.

That will simplify MySQL/MariaDB management.

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Tips & Tricks : CentOS firewalld : open port

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Once you install CentOS 7, by default firewalld will block almost all network traffic.

In order to open ports for certain services you can easily reconfigure firewall using firewall-cmd command.

[root@localhost firewalld]# firewall-cmd --get-active-zones
public
  interfaces: eno16777728
[root@localhost firewalld]# firewall-cmd --zone=public --add-port=80/tcp --permanent
success
[root@localhost firewalld]# firewall-cmd --reload
success

Example contains port 80, however you can open any port using same method.
It is worth to check zones configured on your machine and make sure you open port in proper zone where service should be enabled.

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Tips & Tricks : Introduction to Laravel : Free coding tools

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In previous articles:

we created and published web project.

Now it’s time to try to do some development and modify out-of-the-box project to create our own application.

Question is what tools should we use to start code development.

You might want to have a look at two available for free:

Sublime Text

Download from: http://www.sublimetext.com

Sublime Text

Visual Studio Code

Download from: http://code.visualstudio.com

Visual Studio Code


Both apps can highlight syntax for PHP-based code, so both can be used for development purposes with Laravel web application.

Check them and decide which one will be better fit for you.