erol, Author at erol.name

21. 03. 201617. 04. 2017

Change default editor in Debian and debian-like distributions

To check which editor is set as default in your Debian distro you can do two things:

in your favorite shell press CTRL+X+CTRL+E which will launch your default editor or
use command update-alternatives –list-editor to list installed editors and you can expect result similar like this one:

# update-alternatives --list editor
 /bin/nano
 /usr/bin/mcedit
 /usr/bin/vim.basic

To set for example vim.basic as your default editor you can use following command:

# update-alternatives --set editor /usr/bin/vim.basic
 update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/editor (editor) in manual mode

Now if you again quick launch your editor with CTRL+X+CTRL+E you will notice that vim is invoked.

21. 03. 201617. 04. 2017

Useful shell shortcuts

Here are some useful shell shortcuts that you can use to make your life easier:

CTRL+A - move to beginning of line
CTRL+E - move to the end of the line
CTRL+B - move backward
CTRL+F - move forward
CTRL+D - delete character under cursor
CTRL+K - deletes text from cursor to the end of line
CTRL+X+BACKSPACE - delete text from cursor to the beginning of the line
CTRL+T - exchange character under cursor with previous character
ESC+T - exchange two words before and under cursor
ESC+U - converts text from cursor to the end of the word to UPPERCASE
ESC+L - converts text from cursor to the end of the word to LOWERCASE
CTRL+X+CTRL+E - launch default editor
CTRL+L - Clears screen above current line
CTRL+W - Delete word from cursor position to the left
CTRL+R - Search through command history

17. 03. 201617. 04. 2017

Create incremental number list in vim with using simple macro

I do not use vim macros often, but they can be useful from time to time. But when I need them I always need to re-learn the shortcuts, so now I will summarize them in simple example which will create number list from 1. to 50.

Start your vim editor by typing:

vim list.txt

Continue reading “Create incremental number list in vim with using simple macro”

11. 03. 201617. 04. 2017

Upgrade Xbian installation to support Raspberry Pi 3

Recently I bought two Raspberry Pi 3 devices, one for my RetroPie gaming center and one for my Kodi / Xbian always-on media-center.

Retropie with version 3.6 came out of the box with Raspberry Pi 3 support, so it was an easy to replace old unit with new one.

Xbian needs new kernel package (4.4.4+) to support Raspberry Pi 3. There are two ways to get your Xbian to support your new device: Continue reading “Upgrade Xbian installation to support Raspberry Pi 3”

09. 03. 201617. 04. 2017

Prevent kernel out of memory manager to kill processes on Raspberry Pi 2

I am using Raspberry Pi 2 with Xbian installed as my primary always on media-player device. Beside usual Kodi and few other services I also have MySQL, pihole, lighttpd, rtorrent, samba and few other.

Lately I am faced with kernel oops when trying to copy larger files, over 500MB. Rapsberry Pi becomes unresponsive, I can ping it but no longer connect to it. Continue reading “Prevent kernel out of memory manager to kill processes on Raspberry Pi 2”