ArchLinux 终端文字颜色设置

  默认情况下，ArchLinux的终端显示是黑白的，如命令提示行（即root@host:~#）、ls显示的结果等，下面描述两种设置方法，即手动设置与使用Gentoo的配置文件。

1. 手动设置：

  对于普通用户，编辑~/.bashrc，添加如下代码：

PS1=\[\e[32;1m\]\u@\h\[\e[m\]:\[\e[33m\]\w\[\e[m\]\$' 
 export PS1

 上面代码在命令提示行显示用户（红色、高亮）、冒号（白色）、当前路径（黄色）和$符号。

  对于root用户，可编辑/etc/bash.bashrc，添加或更改如下代码：

PS1=\[\e[32;1m\]\u@\h\[\e[m\]:\[\e[33m\]\w\[\e[m\]\$' 
export PS1
alias ls='ls --color=auto'
alias grep='grep --colour=auto' #这句确实起作用

 2. 使用Gentoo的配置文件：

Gentoo的.bashrc：

# /etc/skel/.bashrc
#
# This file is sourced by all *interactive* bash shells on startup,
# including some apparently interactive shells such as scp and rcp
# that can't tolerate any output. So make sure this doesn't display
# anything or bad things will happen !


# Test for an interactive shell. There is no need to set anything
# past this point for scp and rcp, and it's important to refrain from
# outputting anything in those cases.
if [[ $- != *i* ]] ; then
# Shell is non-interactive. Be done now!
return
fi


# Put your fun stuff here.

 Gentoo的/etc/bash/bashrc:

# /etc/bash/bashrc
#
# This file is sourced by all *interactive* bash shells on startup,
# including some apparently interactive shells such as scp and rcp
# that can't tolerate any output. So make sure this doesn't display
# anything or bad things will happen !


# Test for an interactive shell. There is no need to set anything
# past this point for scp and rcp, and it's important to refrain from
# outputting anything in those cases.
if [[ $- != *i* ]] ; then
# Shell is non-interactive. Be done now!
return
fi

# Bash won't get SIGWINCH if another process is in the foreground.
# Enable checkwinsize so that bash will check the terminal size when
# it regains control. #65623
# http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)
shopt -s checkwinsize

# Enable history appending instead of overwriting. #139609
shopt -s histappend

# Change the window title of X terminals 
case ${TERM} in
xterm*|rxvt*|Eterm|aterm|kterm|gnome*|interix)
PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}\007"'
;;
screen)
PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}\033\\"'
;;
esac

use_color=false

# Set colorful PS1 only on colorful terminals.
# dircolors --print-database uses its own built-in database
# instead of using /etc/DIR_COLORS. Try to use the external file
# first to take advantage of user additions. Use internal bash
# globbing instead of external grep binary.
safe_term=${TERM//[^[:alnum:]]/?} # sanitize TERM
match_lhs=""
[[ -f ~/.dir_colors ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
[[ -z ${match_lhs} ]] \
&& type -P dircolors >/dev/null \
&& match_lhs=$(dircolors --print-database)
[[ \n'${match_lhs} == *\n'"TERM "${safe_term}* ]] && use_color=true

if ${use_color} ; then
# Enable colors for ls, etc. Prefer ~/.dir_colors #64489
if type -P dircolors >/dev/null ; then
if [[ -f ~/.dir_colors ]] ; then
eval $(dircolors -b ~/.dir_colors)
elif [[ -f /etc/DIR_COLORS ]] ; then
eval $(dircolors -b /etc/DIR_COLORS)
fi
fi

if [[ ${EUID} == 0 ]] ; then
PS1='\[\033[01;31m\]\h\[\033[01;34m\] \W \$\[\033[00m\] '
else
PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '
fi

alias ls='ls --color=auto'
alias grep='grep --colour=auto'
else
if [[ ${EUID} == 0 ]] ; then
# show root@ when we don't have colors
PS1='\u@\h \W \$ '
else
PS1='\u@\h \w \$ '
fi
fi

# Try to keep environment pollution down, EPA loves us.
unset use_color safe_term match_lhs

 参考：http://www.linuxdiyf.com/viewarticle.php?id=197611