Янв 212013
Недавно научился делать вот так:
status_report()
{
echo -en "\e[33;44m"<--><------><------># bacground to blue
echo
echo "-----------------------------"
echo "Report"
echo -e "Stack Pointer = \e[1;34m$SP"<-># Colot set to blue
tput sgr0<-----><------><------><------># terminal restored
echo -en "\e[33;44m"
echo -e "last element = \e[1;31m$data" ># Color set to red
tput sgr0<-----><------><------><------># terminal restored
echo -en "\e[33;44m"
echo -n "-----------------------------"
tput sgr0<-----><------><------><------># terminal restored
}
Что это дает?
А вот что…
Цветной вывод сообщений в консоли. Удобочитаемость повышается в разы.
Полезность не велика, но у меня несколько применений есть.
Это ANSI escape-последовательности. Задаются следующим синтаксисом.
echo -e '\e[col1;col2m выводимый текст'
-e обязательный ключ
-e enable interpretation of backslash escapes
\e[ — начало escape-последовательности.
col1 и col2, цвет символов и цвет фона соответственно.
Числовые значения цвета в escape-последовательностях
| Цвет | Текст | Фон |
|---|---|---|
| черный | 30 | 40 |
| красный | 31 | 41 |
| зеленый | 32 | 42 |
| желтый | 33 | 43 |
| синий | 34 | 44 |
| пурпурный | 35 | 45 |
| зеленовато-голубой | 36 | 46 |
| белый | 37 | 47 |
Синтаксис вообще ни разу не юзерфрендли.
Для решения такой проблемы я использовал переменные.
red='\e[1;31m' blue='\e[1;36m' green='\e[1;32m'
тогда становится гораздо проще подцвечивать консоль.
вот так можно попробовать:
green='\e[1;32m' && echo -e "${green}"`uname -a`
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