Ubuntu Useful Notes

To disable GUI on boot, run:

sudo systemctl set-default multi-user.target

To enable GUI again issue the command:

sudo systemctl set-default graphical.target

To start Gnome session on a system without a current GUI just execute:

sudo systemctl start gdm3.service

Terminator:

Global →Putty Style paste

Profiles →General →Copy on selection

To open preference: shift + mouse middle click

To fix the the ugly tab:

vi ~/.config/gtk-3.0/gtk.css

.terminator-terminal-window notebook tab {
 background-color: #222;
 padding: 0.2em;
 border: 0;
 border-color: #444;
 border-style: solid;
 border-width: 1px;
 }
 
 .terminator-terminal-window notebook tab:checked {
 background-color: #000;
 background-image: none;
 }
 
 .terminator-terminal-window notebook tab label {
 color: #ddd;
 }
 
 .terminator-terminal-window notebook tab:checked label {
 color: #76C802;
 font-weight: 500;
 }
 
 .terminator-terminal-window notebook tab button {
 padding: 0;
 background-color: transparent;
 color: #ccc;
 }
 
 .terminator-terminal-window notebook header {
 background-color: #444;
 }
 
 .terminator-terminal-window notebook tab button:hover {
 border: 0;
 background-image: none;
 border-color: #444;
 border-style: solid;
 border-width: 1px;
 }

Edit ip v4 address in ubuntu18

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