The ANSI/VT100 terminals and terminal emulators are not just able to display black and white text ; they can display colors and formatted texts thanks to escape sequences. Those sequences are composed of the Escape character (often represented by “^[” or “<Esc>”) followed by some other characters: “<Esc>[FormatCodem”.
In Bash, the <Esc> character can be obtained with the following syntaxes:
| // Copyright (c) 2012 Calvin Rien | |
| // http://the.darktable.com | |
| // | |
| // This software is provided 'as-is', without any express or implied warranty. In | |
| // no event will the authors be held liable for any damages arising from the use | |
| // of this software. | |
| // | |
| // Permission is granted to anyone to use this software for any purpose, | |
| // including commercial applications, and to alter it and redistribute it freely, |