Ubuntu – How to edit the binary or hexadecimal data of a file in Ubuntu

I think Answers by Muzaffar and Terrance serves your need. One thing to note is that you can install any of these text editors in any flavors.

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GUI Text Editors

Gedit

Default in:

1. Ubuntu Unity
2. Ubuntu Gnome
3. Ubuntu Kylin
4. Ubuntu Budgie

Gedit is certainly the most famous text editor in the Ubuntu world. Gedit is also available for Windows and MacOS. To install Gedit on any Ubuntu flavor use the following command:

sudo apt-get install gedit

To open a file with gedit:

gedit /path/to.file.txt

Kate

Default in:

1. Kubuntu
2. KDE Neon (not an official Ubuntu flavor)

it is also available for Windows. Like many KDE apps it has a load of features. To install, run:

sudo apt-get install kate

If you want the latest version of Kate, you'll need to add a PPA:

sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt-get update
sudo apt-get install kate

To open a file with kate:

kate /path/to.file.txt

Leafpad

Unlike Kate, emphasis of Leafpad is on simplicity and lightness, which is whole agenda of the LXDE project. It comes pre-installed on Lubuntu. To install:

sudo apt-get install leafpad

To open a file with leafpad:

leafpad /path/to.file.txt

Mousepad

Default in:

1. Xubuntu
2. Ubuntu Studio

In philosophy, Mousepad is pretty similar to Leafpad. To install:

sudo apt-get install mousepad

To open a file with mousepad:

mousepad /path/to.file.txt

Pluma

Pluma is a fork of Gedit which comes preinstalled in Ubuntu Mate. To install:

sudo apt-get install pluma

To open a file with pluma:

pluma /path/to.file.txt

*Note: if you want to edit files with root privileges, add gksu in front of a command, like this:

gksudo gedit path/to/file.txt

It's best to avoid using it with kate

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CLI Text Editors

Nano

sudo apt-get install nano

I don't know if Nano is installed on all the Ubuntu flavors, but it's installed on Ubuntu Unity, Ubuntu Gnome and Kubuntu as per my knowledge. To open a file with nano use following command:

nano /path/to.file.txt

For more information about Nano, see The Beginner’s Guide to Nano, the Linux Command-Line Text Editor.

Vim

sudo apt-get install vim

To open a file with Vim, type either of these two commands:

vim /path/to.file.txt

or

vi /path/to.file.txt

Vim (or at least vi) is installed by default on all Ubuntu (or any other Linux) flavor. If you start to like Vim and want it to have a user interface try Gvim. Also note that on some systems, vi is aliased to vim, so both commands do identical things. (which launching vim)

For more knowledge about vim, see A Beginner's Guide to Vim or run vimtutor in the terminal.

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Keep in mind that QT apps don't look good on Gtk based desktop and vice versa. but if you want them to feel at home, try this question How to make KDE applications look native in GNOME?

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More Linux Text Editors