最後更新: 2024-04-18

目錄

• echo & escape
• Text Color & Reset
• ...
• tput

echo & escape

The -e option of the echo command enable the parsing of the escape sequences.

In Bash, the <Esc> character can be obtained with the following syntaxes:

• \e
• \033
• \x1B

Text Color & Reset

• black='\e[0;30m'
• white='\e[0;1;37m'
• dark_gray='\e[1;30m'
• light_gray='\e[0;37m'

• red='\e[0;31m'
• green='\e[0;32m'
• yellow='\e[0;33m'
• blue='\e[0;34m'
• magenta='\e[0;35m'
• cyan='\e[0;36m'

Light

• Light Red     1;31
• Light Green   1;32
• Yellow        1;33
• Light Blue    1;34
• Light Purple  1;35
• Light Cyan    1;36

Reset attributes(color)

clear='\e[0m'

The ”\e[0m” sequence removes all attributes (formatting and colors)

Text Color Examples

echo -e "The color is: ${red}red${clear}!"

彩虹

for (( i = 30; i < 38; i++ )); do echo -e "\e[0;"$i"m Normal: (0;$i); \e[1;"$i"m Light: (1;$i)"; done; echo -e "\e[0m"

Text background color

• bg_red='\e[0;41m'
• bg_green='\e[0;42m'
• bg_yellow='\e[0;43m'
• bg_blue='\e[0;44m'
• bg_magenta='\e[0;45m'
• bg_cyan='\e[0;46m'

tput

Usage

• tput setab [1-7]   # Set the background colour using ANSI escape
• tput setaf [1-7]    # Set the foreground colour using ANSI escape
• tput sgr0             # Reset text format to the terminal's default

Num  Colour    #define         R G B

0    black     COLOR_BLACK     0,0,0
1    red       COLOR_RED       1,0,0
2    green     COLOR_GREEN     0,1,0
3    yellow    COLOR_YELLOW    1,1,0
4    blue      COLOR_BLUE      0,0,1
5    magenta   COLOR_MAGENTA   1,0,1
6    cyan      COLOR_CYAN      0,1,1
7    white     COLOR_WHITE     1,1,1

e.g.

echo "$(tput setaf 1)Red text $(tput setab 7)and white background$(tput sgr 0)"

應用

redC=`tput setaf 1`
greenC=`tput setaf 2`
resetC=`tput sgr0`
echo "${redC}red text ${greenC}green text${resetC}"