我要评论实现代码：
#!/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"
}
先定义函数，接着初始化下函数，接着你就可以看到效果了。
执行
echo -e ${yellowf}this is a phrase in yellow${redb} and red${reset}
echo -e ${boldon}this is bold${ulon} this is italics${reset} bye bye
echo -e ${italicson}this is italics${italicsoff} and this is not
你了解了后以后及可以写出带颜色，很炫的脚本了
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