控制输出颜色的shell脚本

#!/bin/sh# ANSI Color -- Use these variables to make output in different colors# and formats. Color names that end with 'f' are foreground (text) colors,# and those ending with 'b' are background colors.initializeANSI(){ esc="/033" # if this doesn't work, enter an ESC directly blackf="${esc}[30m";  redf="${esc}[31m";  greenf="${esc}[32m" yellowf="${esc}[33m"  bluef="${esc}[34m";  purplef="${esc}[35m" cyanf="${esc}[36m";  whitef="${esc}[37m" blackb="${esc}[40m";  redb="${esc}[41m";  greenb="${esc}[42m" yellowb="${esc}[43m"  blueb="${esc}[44m";  purpleb="${esc}[45m" cyanb="${esc}[46m";  whiteb="${esc}[47m" boldon="${esc}[1m";  boldoff="${esc}[22m" italicson="${esc}[3m"; italicsoff="${esc}[23m" ulon="${esc}[4m";   uloff="${esc}[24m" invon="${esc}[7m";   invoff="${esc}[27m" reset="${esc}[0m"}