18. May 2017

How to use PowerShell in IntelliJ Idea terminal instead of cmd

IntelliJ Idea has support for embedded terminal. That’s handy because you do not need to open extra window just for a terminal.

The default configuration of IntelliJ on Windows is installed with old-school cmd.exe. It’s quite easy to replace it by PowerShell.

Go to Settings (Ctrl+Alt+S). Search for word “terminal“. Select Tools – Terminal.

Change Shell path option from cmd.exe to

C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe

Press OK and start new Terminal window.

I recommend to use Dracula theme which is a little bit more readable than the white theme.

15. May 2017

C in our world 2017


Slides available in formats: PDFSlideShare

Source code: GitHub/ysoftdevs/cpp-examples

24. March 2017

How to start Wireshark on openSUSE

The simple way how to start Wireshark on Linux is to type:

wireshark

If you run this command as a normal user you won’t be able to capture packets. In order to dump packets, you need to execute it as root. This must be done in a specific way. If try just sudo you’ll end up with interesting errors like:

Attempt #1

$ sudo su
# wireshark
QXcbConnection: Could not connect to display 
Aborted (core dumped)

Attempt #2

$ sudo wireshark
QXcbConnection: Could not connect to display 
[1]    8836 abort      sudo wireshark

The proper way how to start Wireshark is by gtk-su:

xdg-su -c wireshark

13. March 2017

How to switch tabs in Konsole

Konsole has support for tabs like other terminal emulators. The question is how to switch between tabs using a keyboard.

Default keyboard shortcut is Shift + Left/Right Arrow.

If you’re used to other keyboard shortcuts like Ctrl + PgUp/PgDn which are common in Google Chrome then you can add new shortcuts easily.

Open menu Settings, select Configure Shortcuts…

Type word tab into Search field.

Find item Next tab. Click column Alternate. Click button with title None. Now you can define a keyboard shortcut. Press Ctrl + PgUp.

Find item Previous tab. Click column Alternate and button with title None. Press Ctrl + PgDown. Click OK to confirm your configuration.

Now you can enjoy new configuration. If you like this tip or you’d like some other hint about Linux let me know in the comments section bellow.

2. March 2017

How to increase font size in pgAdmin 4 on Windows

New version of pgAdmin 4 is based on QT5. When you install pgAdmin 4 on Windows computer with a high-density display you may see that letters are too small.

Solution is to send one parameter to QT engine. It will handle DPI in different way.

Open PowerShell and go to directory with pgAdmin. Then launch application with parameter:

cd "c:\Program Files\PostgreSQL\9.6\pgAdmin 4\bin"
.\pgAdmin4.exe -platform windows:dpiawareness=0

You can persist the configuration by creating qt.conf. Start PowerShell as Administrator. Go to directory with pgAdmin and create the file:

cd "c:\Program Files\PostgreSQL\9.6\pgAdmin 4\bin"
notepad qt.conf

Write there following content:

[Platforms]
WindowsArguments = dpiawareness=0

Save the file and start pgAdmin 4 and enjoy new font size.