我正在尝试使用echo命令在终端中打印文本。
我想用红色打印文本。我该怎么做？
当前回答
其他的答案已经很好地解释了如何做到这一点。我仍然缺少的是对颜色代码的一个精心安排的概述。维基百科文章“ANSI转义码”对此非常有用。然而，由于颜色通常可以在每个终端中进行配置，并且看起来不同，所以我更希望有一个可以在终端中调用的功能。为此，我创建了以下函数来显示颜色表，并提醒我如何设置它们（排列方式受wiki文章的启发）。例如，您可以将它们加载到.bashrc/.zshrc中，或将它们作为脚本放在某处。
256色
由bash/zsh脚本生成：
function showcolors256() {
local row col blockrow blockcol red green blue
local showcolor=_showcolor256_${1:-bg}
local white="\033[1;37m"
local reset="\033[0m"
echo -e "Set foreground color: \\\\033[38;5;${white}NNN${reset}m"
echo -e "Set background color: \\\\033[48;5;${white}NNN${reset}m"
echo -e "Reset color & style: \\\\033[0m"
echo
echo 16 standard color codes:
for row in {0..1}; do
for col in {0..7}; do
$showcolor $(( row*8 + col )) $row
done
echo
done
echo
echo 6·6·6 RGB color codes:
for blockrow in {0..2}; do
for red in {0..5}; do
for blockcol in {0..1}; do
green=$(( blockrow*2 + blockcol ))
for blue in {0..5}; do
$showcolor $(( red*36 + green*6 + blue + 16 )) $green
done
echo -n " "
done
echo
done
echo
done
echo 24 grayscale color codes:
for row in {0..1}; do
for col in {0..11}; do
$showcolor $(( row*12 + col + 232 )) $row
done
echo
done
echo
}
function _showcolor256_fg() {
local code=$( printf %03d $1 )
echo -ne "\033[38;5;${code}m"
echo -nE " $code "
echo -ne "\033[0m"
}
function _showcolor256_bg() {
if (( $2 % 2 == 0 )); then
echo -ne "\033[1;37m"
else
echo -ne "\033[0;30m"
fi
local code=$( printf %03d $1 )
echo -ne "\033[48;5;${code}m"
echo -nE " $code "
echo -ne "\033[0m"
}
16种颜色
由bash/zsh脚本生成：
function showcolors16() {
_showcolor "\033[0;30m" "\033[1;30m" "\033[40m" "\033[100m"
_showcolor "\033[0;31m" "\033[1;31m" "\033[41m" "\033[101m"
_showcolor "\033[0;32m" "\033[1;32m" "\033[42m" "\033[102m"
_showcolor "\033[0;33m" "\033[1;33m" "\033[43m" "\033[103m"
_showcolor "\033[0;34m" "\033[1;34m" "\033[44m" "\033[104m"
_showcolor "\033[0;35m" "\033[1;35m" "\033[45m" "\033[105m"
_showcolor "\033[0;36m" "\033[1;36m" "\033[46m" "\033[106m"
_showcolor "\033[0;37m" "\033[1;37m" "\033[47m" "\033[107m"
}
function _showcolor() {
for code in $@; do
echo -ne "$code"
echo -nE " $code"
echo -ne " \033[0m "
done
echo
}
其他回答
以下是我最终使用sed的结果
echo " [timestamp] production.FATAL Some Message\n" \
"[timestamp] production.ERROR Some Message\n" \
"[timestamp] production.WARNING Some Message\n" \
"[timestamp] production.INFO Some Message\n" \
"[timestamp] production.DEBUG Some Message\n" | sed \
-e "s/FATAL/"$'\e[31m'"&"$'\e[m'"/" \
-e "s/ERROR/"$'\e[31m'"&"$'\e[m'"/" \
-e "s/WARNING/"$'\e[33m'"&"$'\e[m'"/" \
-e "s/INFO/"$'\e[32m'"&"$'\e[m'"/" \
-e "s/DEBUG/"$'\e[34m'"&"$'\e[m'"/"
打印方式如下：
您可以“组合”颜色和文本模式。
#!/bin/bash
echo red text / black background \(Reverse\)
echo "\033[31;7mHello world\e[0m";
echo -e "\033[31;7mHello world\e[0m";
echo
echo yellow text / red background
echo "\033[32;41mHello world\e[0m";
echo -e "\033[32;41mHello world\e[0m";
echo "\033[0;32;41mHello world\e[0m";
echo -e "\033[0;32;41mHello world\e[0m";
echo
echo yellow BOLD text / red background
echo "\033[1;32;41mHello world\e[0m";
echo -e "\033[1;32;41mHello world\e[0m";
echo
echo yellow BOLD text underline / red background
echo "\033[1;4;32;41mHello world\e[0m";
echo -e "\033[1;4;32;41mHello world\e[0m";
echo "\033[1;32;4;41mHello world\e[0m";
echo -e "\033[1;32;4;41mHello world\e[0m";
echo "\033[4;32;41;1mHello world\e[0m";
echo -e "\033[4;32;41;1mHello world\e[0m";
echo
感谢@k-five的回答
declare -A colors
#curl www.bunlongheng.com/code/colors.png
# Reset
colors[Color_Off]='\033[0m' # Text Reset
# Regular Colors
colors[Black]='\033[0;30m' # Black
colors[Red]='\033[0;31m' # Red
colors[Green]='\033[0;32m' # Green
colors[Yellow]='\033[0;33m' # Yellow
colors[Blue]='\033[0;34m' # Blue
colors[Purple]='\033[0;35m' # Purple
colors[Cyan]='\033[0;36m' # Cyan
colors[White]='\033[0;37m' # White
# Bold
colors[BBlack]='\033[1;30m' # Black
colors[BRed]='\033[1;31m' # Red
colors[BGreen]='\033[1;32m' # Green
colors[BYellow]='\033[1;33m' # Yellow
colors[BBlue]='\033[1;34m' # Blue
colors[BPurple]='\033[1;35m' # Purple
colors[BCyan]='\033[1;36m' # Cyan
colors[BWhite]='\033[1;37m' # White
# Underline
colors[UBlack]='\033[4;30m' # Black
colors[URed]='\033[4;31m' # Red
colors[UGreen]='\033[4;32m' # Green
colors[UYellow]='\033[4;33m' # Yellow
colors[UBlue]='\033[4;34m' # Blue
colors[UPurple]='\033[4;35m' # Purple
colors[UCyan]='\033[4;36m' # Cyan
colors[UWhite]='\033[4;37m' # White
# Background
colors[On_Black]='\033[40m' # Black
colors[On_Red]='\033[41m' # Red
colors[On_Green]='\033[42m' # Green
colors[On_Yellow]='\033[43m' # Yellow
colors[On_Blue]='\033[44m' # Blue
colors[On_Purple]='\033[45m' # Purple
colors[On_Cyan]='\033[46m' # Cyan
colors[On_White]='\033[47m' # White
# High Intensity
colors[IBlack]='\033[0;90m' # Black
colors[IRed]='\033[0;91m' # Red
colors[IGreen]='\033[0;92m' # Green
colors[IYellow]='\033[0;93m' # Yellow
colors[IBlue]='\033[0;94m' # Blue
colors[IPurple]='\033[0;95m' # Purple
colors[ICyan]='\033[0;96m' # Cyan
colors[IWhite]='\033[0;97m' # White
# Bold High Intensity
colors[BIBlack]='\033[1;90m' # Black
colors[BIRed]='\033[1;91m' # Red
colors[BIGreen]='\033[1;92m' # Green
colors[BIYellow]='\033[1;93m' # Yellow
colors[BIBlue]='\033[1;94m' # Blue
colors[BIPurple]='\033[1;95m' # Purple
colors[BICyan]='\033[1;96m' # Cyan
colors[BIWhite]='\033[1;97m' # White
# High Intensity backgrounds
colors[On_IBlack]='\033[0;100m' # Black
colors[On_IRed]='\033[0;101m' # Red
colors[On_IGreen]='\033[0;102m' # Green
colors[On_IYellow]='\033[0;103m' # Yellow
colors[On_IBlue]='\033[0;104m' # Blue
colors[On_IPurple]='\033[0;105m' # Purple
colors[On_ICyan]='\033[0;106m' # Cyan
colors[On_IWhite]='\033[0;107m' # White
color=${colors[$input_color]}
white=${colors[White]}
# echo $white
for i in "${!colors[@]}"
do
echo -e "$i = ${colors[$i]}I love you$white"
done
后果
希望这张图片能帮助你选择适合你的颜色：D
可以使用以下ANSI转义码：
Black 0;30 Dark Gray 1;30
Red 0;31 Light Red 1;31
Green 0;32 Light Green 1;32
Brown/Orange 0;33 Yellow 1;33
Blue 0;34 Light Blue 1;34
Purple 0;35 Light Purple 1;35
Cyan 0;36 Light Cyan 1;36
Light Gray 0;37 White 1;37
然后在脚本中这样使用它们：
# .---------- constant part!
# vvvv vvvv-- the code from above
RED='\033[0;31m'
NC='\033[0m' # No Color
printf "I ${RED}love${NC} Stack Overflow\n"
用红色印着爱。
从@james lim的评论中，如果您使用echo命令，请确保使用-e标志来允许反斜杠转义。
# .---------- constant part!
# vvvv vvvv-- the code from above
RED='\033[0;31m'
NC='\033[0m' # No Color
echo -e "I ${RED}love${NC} Stack Overflow"
（使用echo时不要添加“\n”，除非您想添加额外的空行）
到目前为止，我最喜欢的答案是彩色回声。
为了发布另一个选项，您可以查看这个小工具xcol
https://ownyourbits.com/2017/01/23/colorize-your-stdout-with-xcol/
您可以像grep一样使用它，例如，它会为每个参数用不同的颜色来着色其stdin
sudo netstat -putan | xcol httpd sshd dnsmasq pulseaudio conky tor Telegram firefox "[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+" ":[[:digit:]]+" "tcp." "udp." LISTEN ESTABLISHED TIME_WAIT
注意，它接受sed将接受的任何正则表达式。
此工具使用以下定义
#normal=$(tput sgr0) # normal text
normal=$'\e[0m' # (works better sometimes)
bold=$(tput bold) # make colors bold/bright
red="$bold$(tput setaf 1)" # bright red text
green=$(tput setaf 2) # dim green text
fawn=$(tput setaf 3); beige="$fawn" # dark yellow text
yellow="$bold$fawn" # bright yellow text
darkblue=$(tput setaf 4) # dim blue text
blue="$bold$darkblue" # bright blue text
purple=$(tput setaf 5); magenta="$purple" # magenta text
pink="$bold$purple" # bright magenta text
darkcyan=$(tput setaf 6) # dim cyan text
cyan="$bold$darkcyan" # bright cyan text
gray=$(tput setaf 7) # dim white text
darkgray="$bold"$(tput setaf 0) # bold black = dark gray text
white="$bold$gray" # bright white text
我像这样在脚本中使用这些变量
echo "${red}hello ${yellow}this is ${green}coloured${normal}"
